How To Fix A Sour Wine

Sour FaceHello,
I’m a beginner wine maker, and my last batch (2012) grapes were picked late. As the result the Brix level was high (27), and based on others recommendation I added some water to lower the Brix level. But this also lowered the TA to about .40%, which is lower that recommended. So the same expert friend also recommended adding some Tartaric acid to increase the TA. I used half the recommended amount, and ended up with .75%, which is too high. My Red wine is now aging in an Oak barrel, and the TA has been naturally lowered. But it is still a bit too sour for my taste. What do you recommend, not touching it, or to make further adjustment?
Name: Massoud V.
State: Washington
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Hello Massoud,
Sorry you are having such a problem with your wine’ s acidity. Fortunately, there is something you can do to correct the wine.
Add potassium bicarbonate to the wine, also referred to as Acid Reducing Crystals. This works fairly well when you only need to adjust the total acidity (TA) just a little bit — say 10 or 20 basis points. The potassium bicarbonate will cause some of the tartaric acid in the wine to solidify as potassium bitartrate crystals and settle to the bottom.
Potassium bicarbonate is very simple to use. You stir in the appropriate amount needed and then let the wine set for anywhere from 1 week to 1 month. Take weekly readings with an Acid Test Kit. When you no longer see any change in the reading and the potassium bitartrate crystals have had time to clear, then you are free to bottle the wine at your leisure.
It’s good to be patient with this step. If you bottling the wine before all the crystals have formed or have had time to settle out, then you will end up with crystal deposits in your bottles of wine. Also, the cooler you can keep the wine during this step, the faster it will go. So store the wine in as cold of place as possible, but do not freeze.
Knowing how much potassium bicarbonate to add is simply a math problem. For every teaspoon of potassium bicarbonate you add to a gallon of wine, you will reduce the total acidity of that wine by .18%.
Let’s assume that you have a 5 gallon barrel of wine, and the TA has settled in a .70% tartaric — but you want it to be .60% tartaric. That means you want to lower the total acidity by .10%. If one teaspoon will lower a gallon by .18%, then one teaspoon will lower 5 gallons by .036% (.18 / 5 = .036). With this information you can determine that you need to add 2.78 teaspoons to the 5 gallons to lower the total acidity by .10% (.10 / .036 = 2.78).
Before using the Acid Reducing Crystals you may want to give the wine more time to age. You say that the total acidity of the wine is naturally lowering. What this means is some of the tartaric acid is dropping out on its own. As eluded to before, if you cool the wine down it may increase this natural dropping-out of tartaric acid to an extent that is acceptable.
But if you done waiting, then by all means use the potassium bicarbonate. If is a very accurate way to predictably lower your wine’s acidity and is fairly simple to do.
One other subject we won’t get into here but is something you may want to investigate, is using a malolactic fermentation to reduce your wine’s acidity . It’s not the right thing to do to all wines, but may be an option for the wine you have.
Happy Winemaking,
Ed Kraus
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

There's White Stuff On My Wine!

Sampling WineI have an overrun one gallon jug of Merlot on its 2nd racking and its got some white moldy looking stuff on top of the wine between the wine and the stopper . Which is a 1 inch gap. What’s up with that? And should I rack it and see what happens or what?Name: Dennis D.
State: PA.
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Hello Dennis,
It could be a mold beginning to forming, but most likely it is a bacterial infection. This can happen if the wine has completed its fermentation and has become still. When an air-lock goes dry or is taken off the glass jug, fresh air can encourage bacteria to grow. Winemaker’s refer to this as flowers.
It sounds like you have a very small amount in the neck of the glass jug. This is not too serious and can easily be overcome. I would go ahead and rack the wine into another sanitized jug.
If the fermentation has already completed, I would not hesitate to add sulfites to the wine: add either a Campden tablet or 1/16 teaspoon of either potassium metabisulfite or sodium metabisulfite. This will easily destroy the bacteria. The wine should be perfectly fine after that, but you will only be able to find out by smelling and tasting the wine.
If the wine is still fermenting then you’ll just have to wait it out. You can siphon the wine into another sanitized gallon glass jug. Siphon from the middle so as to leave both the surface scum and the sediment behind. Once the fermentation does complete, be sure to get the sulfites on the gallon of wine as soon as the fermentation completes.
A blog post you may want to take a look at is There’s White Scum On My Wine. What Should I Do? This goes over in a little more detail what you can do to fix the problem. Another one that my glean some insight is Can You Have Head-Space In Your Secondary Fermenters?
Again, you situation does not sound too serious. My instincts tell me the wine will be just fine, but you’ll have to depend on your own smell and taste to really know.
Happy Winemaking,
Ed Kraus
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

Keep Your Wine Healthy by Cleaning And Sanitizing Your Wine Bottles

Clean Wine BottlesYour role as a home winemaker doesn’t stop until you’ve put that bottled wine to bed.  It’s important to keep your focus all the way to the very end of the process without skipping any steps that you may think are not important, but all that hard work you put into making that wine could all be for not if you are complacent about the final steps.
Even though it’s just about the last step and you’ve been so patient up until now, bottling is just as important as any other step during the home winemaking process.  You’ve been very diligent about sterility and cleanliness up until now, so why stop now?  Regardless of whether or not you are using new wine bottles or recycling old ones, it’s important to take the time to clean and sanitize your wine bottles, as putting your homemade wine into a dirty bottle is a recipe for disaster.
The only equipment you really need is a bottle washer, a bottle brush, and a bottle tree (and soap, of course). The bottle washer shoots a very strong blast of water into your bottles, which is perfect for removing soap residue or other solid particles.  It has a garden hose-type thread on the end so you can easily attach it to outside faucets or laundry faucets.  If you need to attach it to a kitchen faucet-no problem!  Just purchase the handy “kitchen faucet thread adapter”!
The bottle brush is pretty self-explanatory: you need a skinny brush that will fit into the neck of a bottle in order to clean any soap or solid particles off the insides of your wine bottle.  Once you’ve given your bottle a final rinse with the bottle washer, you can hang it on the bottle tree to drain and dry.
For both recycled and new wine bottles, you want to give them a good rinse in hot soapy water.  For recycled bottles, it’s important to use the bottle brush, as there could be solid particles left behind from the previous wine.  For brand new wine bottles, you probably don’t need to use a bottle brush, since the only likely thing in the bottle after shipping to your home is cardboard dust, and that will come right out with a good rinse.
Of course, it never hurts to use the bottle brush, so if you’re worried about it, brush away!  Finally, give all wine bottles a good shot of the bottle washer/jet and let dry on the bottle tree.  Keep in mind, if there are any labels on your old bottles, you’ll want to soak them in hot water and scrap off the label bits!
Once you have the wine bottles soapy clean, it is time to give them a quick sanitizing bath. It’s fairly easy, and it’s quick. There are many products you can use to sanitize these bottles, but one I’m partial to is Basic A. The reason being, it is a no-rinse cleaner. All you need to do is dip the wine bottles in a solution of Basic A, then allow them to air-dry on the bottle tree. The actual sterilization happens as the solution evaporates from the bottle’s surface. Once the wine bottles are drained and dried, you are ready to go.
Cleaning and sanitizing your wine bottles is an important step in the winemaking process and one not to be glossed over.  It’s just as critical to the quality of the wine as any of the other steps performed along the way, so don’t waste all your previous efforts by not giving due-diligence to a step that can have such a critical effect.
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

Is It OK To Bottle A Carbonated Wine?

Making Cracking Petillant WineI started bottling a Red Zinfandel which I started in March. It is now June 29. I noticed bubbles in the bottles as I was filling them. I tasted the wine and it felt like it was slightly carbonated. The SG is .998. What might I do to prevent any exploding bottles or should I put the wine back into a carboy and make adjustments. This is the 7th or 8th wine I have made and I have had no problems in the past with either reds or whites.
Thank you for your prompt response.
Tom
Name: Tom M.
State: New York
Hello Tom,

It is possible that the bubbling action you saw was from a slight fermentation but not very likely. With a specific gravity reading from the wine hydrometer of .998, I would say that the wine yeast have little to nothing to ferment and therefore have no way of causing any re-fermentation problems after you bottle the wine.
What you are most likely seeing is the leftover CO2 gas from the original fermentation. A wine fermentation creates both CO2 gas and alcohol. The CO2 gas is what you see coming through the air-lock. The CO2 gas is also the same stuff that’s puts the fizzy in beer and soda pop.
Most of the gas wants to leave, but some of it will stay saturated into the wine. It is only when the wine is agitated that it will take the opportunity to escape. This result is the bubbles you are seeing.
One thing you should do is degas the wine before bottling. Degassing the wine is simply agitating it so that the CO2 gas will leave before bottling. If you made your wine from a wine ingredient kit, the directions generally say to stir or shake the carboy before adding any clarifiers and bottling. If this is a step you did not do, or do enough, then this is what you are seeing.
One handy piece of wine making equipment we offer is a Degassing / Mix Paddle. It is a paddle that actually chucks onto a hand drill. The paddles are hinged so that it folds up small enough to fit into the opening of a glass carboy. Just stick it into the wine and pull the trigger.
I would like to point out the CO2 gas does not negatively affect the wine in any way. Upon decanting the wine you will see some bubbles, but nothing near to the degree of a sparking wine. A sparkling wine has a lot more CO2 gas in it. It is kept in the wine under pressure. This wine will not be under pressure in any way. The wine will only be holding the CO2 gas it can without pressure, which is not very much. Wines like this are known as crackling or petillant wines.
To sum up, the only way the bubbles could be causing a problem is if the wine were still fermenting. With the reading you gave of .998 on your wine hydrometer, this is not very likely. This reading indicates that there are no sugars left to ferment. If you have already bottled the wine there is no reason to be concerned. If you haven’t that you have the opportunity to degas the wine completely then bottle, but this is not necessary from a safe wine perspective.

Happy Winemaking,
Ed Kraus
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

Harvest Your Grapes Like A Pro, With A Wine Refractometer!

Wine RefractometerAs you progress in your wine making practice, you may find yourself making wine from grapes (if you aren’t already).  Taking it a step further, you may find yourself gaining access to grapes that are still on the vine, allowing yourself much more control over things like: when the grapes should be picked.
Now that you’re diving into the realm of viticulturalist, you’ll need to become familiar with one piece of wine making equipment that is a must-have for all those making wine from grapes.
The wine refractometer is a piece of equipment that you must have if you will be in charge of determining when to pick your grapes.  Before you harvest your grapes, you want to be sure the grapes have matured to a particular sugar level best suited for a well-balanced finished wine.  Wine refractometers act to measure the Brix present in the grapes, thus allowing you to determine if they are ready to be harvested or if they need to remain on a vine for a longer period of time.
Wine refractometers work by using light to measure the density of water-soluble compounds in a sample.  What these devices are actually measuring is the refractive index of a fluid sample.  Basically, as light travels through a sample, it will move faster or slower depending upon how dense the fluid is.  The denser the sample is, the slower the light will refract, and the higher the value on the refractometer is read.  In other words, the more sugar that is in the sample, the more dense the sample is, thereby the reading on the wine refractometer will be higher than if it was a sample of pure water (less dense than a sugar solution).  Here’s more information on how a wine refractometer works.
Wine refractometers come is various styles and designs and all are functionally very similar.  To operate a wine refractometer, you’ll need a grape sample.  Ideally, you’ll want to take multiple samples throughout the vineyard to check for variation in maturation times (you may want to harvest different sections at different times).  You’ll want to try and harvest those grapes that are all at the same stage in their maturation process, in order to create a more balanced wine.
Next, squeeze the grape into a plastic bag in order to release the juices.  Then, place a couple of drops onto the refractometer, close the attached cover, and peer into the device while holding it up to the light.  The reading will be clearly marked on striations inside the device, allowing you to determine if the grapes are ready to be harvested or not.
There is a lot to learn once you’re at the point of harvesting your own grapes, however, the refractometer is certainly one piece of equipment you’ll never want to be without.
Happy Winemaking,
Ed Kraus
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

Racking Your Wine The Optimal Way

Winemaker Racking WineI have been making your wine for many years. Every time i make a wine kit I have that air space in the top of the carboy. I use to add wine I already made to the carboy to top it off but it takes 2 bottles and that kills me. I am very conservative with the racking tilting carboy on one side to minimize loss and only rack once. I like to bulk age but I am concerned about the effects of the air so I bottle as soon as possible. Is there an option that makes sense. can the sediment be run through a filter to retain more wine? Name: Joe G.
State: RI
Hello Joe,
The first thing I’d like to say is two bottles seems like a lot. We need to figure out what’s going on.
The first thing to consider is maybe you are not starting out with the full amount. So you might want to double check any level markings that are on your primary fermenter to confirm that they are correct. Make sure you are starting with the full amount intended.
Assuming that you have measurements correct, I suspect that it is the way you rack your wine that is at issue here. You stated that you only rack your wine once. I believe that you can get more wine by doing more rackings. Here’s how:
You should be doing 3 rackings:
  • One on about day 5 of the fermentation
  • Another after the fermentation has completed
  • One more right before bottling.
Some winemakers will even add a fourth racking between the fermentation completing and the one before bottling. This is particularly important if you want bulk age your wine.
Here’s the trick that will get you more wine
When doing the first two rackings, get as much liquid as you can, even if there is sediment coming along with it. Only worry about getting all the liquid at this point.
You are only concerned with getting rid of the bulk of the sediment at this time, not all of it. If you try to leave all the sediment behind at this stage you will be wasting a lot of wine.
It is only when you get down to the very last racking that you need to worry about leaving all the sediment behind. But fortunately for you, by the time you get to this stage there should only be a dusting of sediment left to deal with. By racking your wine in this way you will be surprised to find that you may loose about a half a bottle of wine, at the most.
As to your question about filtering the sediment through a some type of filter, there is no successful way I know of to do this. This issue being that that amount of sediment will clog the filter almost immediately. It is important to understand that the sediment from the yeast itself is as fine as flour, so most filters wouldn’t help anyway. Even a coffee filter would allow all of the yeast sediment to pass through.
I have heard of people putting the sediment in jars or jugs and let it separate while under refrigeration, but it my view it is hardly worth the effort, nor is it necessary if you rack your wine as described above.
There is a blog post you may want to take a look at that covers this as well, Don’t Waste The Wine.
Happy Winemaking,
Ed Kraus

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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

Crush And Destem Your Grapes Like A Pro

Motorized Crusher DestemmerPerhaps you’ve been making homemade wine from juice or other fruits up until now, and you’ve recently decided that you would like to start making wine from grapes.  It is important to know your options in regards to how you plan to process your grapes, so you don’t end up with green or other off flavors from the grape stems and other debris.
We’ve already covered grape presses in another post, but I’ll briefly remind you that a grape press is a piece of equipment required to actually press the grapes to extract the juice from the fruit.  It is certainly a piece of equipment you’ll need for making wine from grapes, but for the purposes of today’s post, we’re going to focus primarily on the grape destemmer.
Prior to using the grape press, you first need to destem your grapes, as well as get rid of any leaves, bugs, or any other debris that may be hanging on for dear life to the grapes. There are basically two ways you can do that: 1) using an motorized grape destemmer; and 2) using a manual grape destemmer.
The Marchisio Crusher & Destemmer is a motorized grape stemmer that allows you to process up to 2,200 pounds of grapes per hour.  Basically, there is a set of rollers that act to gently crush the grapes in order to loosen the stem from the skin of the grape.  Then, the crushed grapes are passed through the grape destemmer, which effectively removes up to 90% of the stems that were loosened from the grapes by the crusher.  Finally, the stems are separated from the juice and pulp of the grapes by being discarded out to the side of the destemmer, while the pulp and juice remains at the bottom.
The manual grape destemmer is a very similar product as the motorized version, and crushes the grapes in a very similar fashion.  However, the main difference between the two grape destemmers is that the manual version is powered by a crank wheel powered by human force, whereas the motorized grape destemmer is powered by a machine.  If you’re looking to save a little money or perhaps add a little extra “elbow grease” into your winemaking experience, the manual grape destemmer may be the best option for you.
Crushing and destemming is very important for making wine with grapes, and must be done in a certain manner so that you do not over extract your grapes to reveal too much bitter tannin or potentially green flavors if the grapes aren’t fully seed ripened.  Choosing the appropriate grape destemmer for you will put you well on your way to making a quality wine from grapes.
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

Help! My Homemade Wine Is Cloudy!

Cloudy Peach WineI have a Apple-Peach wine that is six months old. It’s done fermenting, so I used bentonite thinking it would clear so I could bottle. The bentonite didn’t clear at all. It’s not oxidized (I’ve been there and really worked this time to make sure that didn’t happen). I also tried the Kitosol 40 on a six-gallon batch and that didn’t clear either. However, the Kitosol 40 was a batch I bought last year. Can I treat both batches now with the Sparkloid Hot Mix?Name: Becki P.
State: Nebraska
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Hello Becki,
I’m going to assume that the fermentation has actually completed and you have verified this with a wine hydrometer. Sometimes a fermentation can carry on extremely slowly, to an unnoticeable degree, and stir up sediment that will make the wine cloudy.
Becki, if both the bentonite and the Kitosol 40 had no effect on the wine, then I am fairly confident that what you are dealing with is a pectin haze. If this is the case, then there is no fining agent that will be able to clear your cloudy wine.
Fining agents such as the bentonite and Kitosol 40 are designed to collect very fine particles and drag them to the bottom of the fermentation vessel as sediment. These particles can be finer than flour and still be cleared from the wine with these wine ingredients.
But a pectin haze is not caused by particles that make the wine cloudy. It is caused by the molecular make up of the wine. Just like lemonade or apple juice can be cloudy or clear, so can a wine. The cloudiness is caused by pectin cells that are molecularly bound to the liquid. There is no way for a fining agent to collect them and clear them out of the wine.
Pectin is found naturally in any fruit. It makes up the gel that holds the fruit’s fiber together. With most fruit the pectin is broken down by naturally-occurring enzymes during the wine fermentation. This makes the resulting wine clear. But some fruits have higher levels of pectin than others. Peach is one of them. Others are strawberry and plum. Apple has a moderate level of pectin.
When making wine from these fruits additional enzymes may be needed to help breakdown the larger volume of pectin cells. All our fruit wine recipes include the addition of pectic enzyme for this reason.
If you did not add pectic enzyme to your wine recipe then this would be another clue that points to the fact that you are dealing with a pectin haze. If you did add pectic enzyme, then you can still have a pectin haze, but this is not the normal result. It is a matter of how much pectin is in the wine verses how much pectic enzyme is being added.
Here’s What You Can Do To Test For A Pectin Haze:
Assuming you have a 5 gallon batch of wine, take a sample portion of it, like a half gallon or even a gallon, and add a full dose of pectic enzyme to the wine. When I say full dose, I am referring to the amount you would add to the entire 5 gallons. This will concentrate that dose into your smaller sample.
Blend the pectic enzyme evenly throughout the wine, and let it sit for at least two weeks, maybe even a month. What you are looking for is to see if the pectic enzyme in concentrated doses will clear the wine sample. If it does, add the sample back to the rest of the batch and give pectic enzymes a few weeks to work on it. If no improvement is made add another full dose of pectic enzyme to the entire batch and give it some more time.
If your homemade wine is still cloudy then you will have to re-examine the possibility that there is a minor fermentation going on or that the fining agents you chose were just not the right ones for these particular cloudiness. In all honesty I don’t believe this will be the case. There have been many cloudy homemade wines that have cleared up brilliantly have a little pectic enzyme and some patients.
Happy Winemaking,
Ed Kraus
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

Solving the Plastic Taste In Wine And Beer.

I have seen a couple people asking about the plastic taste and smell in wine and beer that sometimes shows up. I have been making wine and beer since the early 80’s and have found through my research, (I’m a Chemical Engineer) that if you use concentrated Chlorine bleach with plastics or rubber (hoses, filters, pumps, gaskets etc.) that it can very easily be absorbed into these materials and then releases the chemical compounds that smell and taste like water from a garden hose exposed to sunlight.
Over the years I have lost two kegs of beer and one batch of wine to this, even though I am careful. Now, I eliminated Chlorine bleach from my wine and brew room and never use it for cleaning any surfaces either. It is relegated to the laundry only.
Hope this bit of advice saves your batches from the dreaded garden hose effect.
Name: Mike S.
State: Shanghai, China
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.

Easy Homemade Wine You Can Be Proud Of

Man Smelling Easy Homemade WineMaking homemade wine doesn’t have to be this impossible task: in fact, making homemade wine can be downright easy with the right tools, equipment, and knowledge!  Easy homemade wine begins with education-you’ll want to become familiar with the history, science, methods, and typical issues that may arise along the way.
Easy homemade wine is certainly within your reach! Start by purchasing a few wine making books to increase your winemaking knowledge.  The Joy of Home Winemaking is a great resource that has information for all levels of home winemakers, and covers many common and not so common problems that may arise.  The Home Winemaker’s Companion is great for the beginning home winemaker, and includes instructions on how to make 100 different wines as well as a troubleshooting guide for problems that may come up on your quest to make easy homemade wine.
If you’re more of a visual learner, easy homemade wine can be yours with the push of the play button!  The DVD: Home Wine Making in 7 Easy Steps is a fantastic resource for the beginner wine maker, and covers basically the same topics that many of the winemaking books cover.  Only with the DVD, you can see what the experts are talking about and you can more easily visualize what you will be doing with your own home winemaking practice.  The DVD Wine Making Video is another great resource for the visual learner, and is also aimed for beginner winemakers and helping you make easy homemade wine.
Starting off your winemaking practice with a home winemaking kit is probably the simplest way to jump into making easy homemade wine.  Everything you need in terms of wine making equipment and instructions are all packaged together nicely in the winemaking kit, and is one of the best ways to ease into making easy homemade wine.  Once you get more comfortable in your own home winemaking practice, you can start expanding by purchasing individual pieces of home winemaking equipment, but for the beginning winemaker, everything you need to make easy homemade wine is right there in one simple kit!
What if you run into trouble and can’t figure out what to do next even after reading all your shiny new wine making books and/or wine kit instructions?  Well, the fact that you’re reading this blog means you already know one way to tackle these seemingly unsolvable problems and that is to ask ! The team here at Adventures in Homebrewing trys hard to provide you with endless information on the website and blog related to making your own wine.  Making easy homemade wine shouldn’t be just a pipe dream, and with the right tools and support, you can be successful in your own home winemaking practice!
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Ed Kraus is a 3rd generation home brewer/winemaker and has been an owner of E. C. Kraus since 1999. He has been helping individuals make better wine and beer for over 25 years.