Rye Kvas recipe You will need: 1 cup boiling water; 1 cup rye flour; 1/4 cup slightly warm water; 1 tsp sugar; 1 pkg dry granular yeast (7g); 4 quarts boiled water, cooled to slightly warm.
Preparation: Pour 1 cup boiling water over the flour and stir fast until smooth. Cool 1/4 cup water to slightly warm, dissolve the sugar in it and sprinkle the yeast over. Let stand for 10 minutes. Then mix all together, cover and let it rise until light and double in bulk. Stir in 4 quarts of boiled water, cooled to slightly warm. Cover and let it stand in a warm place for 3-4 days. When liquid is clear and tastes mildly sour, pour itinto bottles and cover. Keep Rye Kvas in the refrigerator.