Kvass is a traditional Eastern European low-alcohol, naturally fermented beverage commonly made from rye bread and sourdough starter.
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Prep Time 20 mins Total Time 20 mins
Servings: 8

Description

The taste is not unlike beer, except it's way healthier since it contains tons of probiotics! 

Making kvass is a relatively simple process. While the fermentation part takes a few days, you’ll only need a few minutes to actually prep everything. The bacteria and yeast are the ones doing all the work in transforming some pieces of stale bread into a delicious bubbly drink! 

Prep time: 20 min 

Total time: 4 - 6 days  

Yield: 8 servings 

Special equipment: Oven; a large baking sheet; a large glass jar; a fine mesh strainer; glass bottles with lid for storage. 

Ingredients

Instructions

  1. Preheat your oven to 400°F, or 200°C. Line a baking sheet with parchment paper and arrange the bread on top. Bake for approximately 20 minutes or until deeply golden. You want the bread to develop a good amount of color.

  1. In the meantime, mix water and honey and warm the mixture. Be sure to keep the temperature between 70°F - 90°F or 20°C - 30°C. Anything above that could kill the cultures.
  1. Drop the toasted rye bread and sourdough starter into a large glass jar. Pour the warm liquid over the bread and cover it loosely.

  1. Allow the kvass to ferment for 4-6 days in a room temperature spot in your kitchen, away from direct sunlight.
  1. Test the liquid, and when it's cultured to your taste, strain through a fine-mesh sieve, discarding the bread and solids.

  1. Transfer the kvass into glass bottles, and store in the fridge.

Note

Additional information: 

  • This kvass recipe lasts up to a week in the fridge. With each day, the flavor develops and becomes richer and less sweet. 
  • Kvass is ever so slightly alcoholic – with 0.5 to 2.5% alcohol content. The longer it sits in the fridge, the more alcoholic it gets, but it’s still considered a very low-alcohol beverage. 
  • It’s also possible to flavor kvass in many different ways. Mint is traditional, but you can also use berries, a handful of raisins or caraway seeds for a distinctive taste. 
  • Sourdough starter is our preferred yeast to use here, but you can also use instant bread yeast with similar results.  

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  1. Andy

    The suggestion in the notes for added caraway seeds sounds incredible with the GF rye bread.