a brick of rye bread
3 liters of water
1 cup sugar
20 grams yeast
2 tablespoons raisins
Rye bread, chopped, dry in the oven. Fold in the pot, pour boiling water. Allow to cool. Strain through cheesecloth. Add the sugar, yeast, mix. Leave on for 10 hours. Pour kwas to bottle, put the raisins, cover tightly, refrigerate. After 2 days the drink is ready.