How long does kvass keep?
How long does an opened bottle of commercially made kvass last in the fridge?
I would have expected the answer to be "weeks", given that it's fermented and would likely just slowly get stronger, but a bottle of Belorussian kvass 1 I recently acquired says it has to be kept below 6°C and "не более суток" (not longer than a day).
Best Answer
In this case, I recommend you follow the manufacturer’s label text.
Traditional kvass is fermented (often in a home setting), and will contain live microorganisms, that keep unwanted ones at bay, similar to a well-established sourdough culture.
But of course there are a few caveats:
- Some manufacturers don’t use the traditional fermentation method and sell a flavored, carbohydrated drink under the same name. This won’t have the “preserving” lactobacillae and yeasts. Consider this a kvass-flavored lemonade.
- Traditionally fermented kvass that still contains active starter culture will continue to ferment - which is not a good idea if you want to ship a product. Like for beer, the manufacturers will ensure that the activity is stopped, which again means that the preserving effect of the culture is lost. (You will get some of the yeast though, unless it’s filtered.)
- Even if someone shipped the still-active brew, there is no way to ensure that they are still alive by the time the consumer opens the bottle.
In short, while your home-fermented drink will keep for a while, the safe approach is to stick to the instructions.
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How do you know if kvass is off?
The kvass should taste watery and have a very subtle fizz. If it turns quite thick and viscous, and has a strange smell, discard the brew and try again. It may be bad due to a variety of factors, such as: not being stirred often enough.How long does beet kvass last in fridge?
Beet Kvass is good for 6-8 weeks in the fridge. Consume 2-6 ounces daily as a blood tonic to keep the organs and digestive system in check.Can you get drunk off of kvass?
Usually, kvass contains not more than 1.5% of alcohol by volume, but if it stands for longer time, the concentration can become 2.5% or higher. Unlike beer, the kvass is generally considered to be a nonalcoholic beverage and is drunk by children of all ages without any limit.Does beet kvass need refrigeration?
If it's a little sweet and a little tangy, it's probably ready. Put the lid back on and store in the refrigerator. If you can, let the kvass sit for a week in the refrigerator just like this. It'll mellow in flavor and thicken.Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Yan Krukov, Llanera Lebra, Anna Shevchuk, Nout Gons