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4 to 6
Easy
Published 2015
Sour soups in Eastern Europe are made using fermented rye (or wheat). This is one you have to start 2 days in advance in order to ferment the rye flour, but you can buy the sour liquid known as “zakwas,” a liquid sourdough starter, in Polish and Eastern European food shops. Anything fermented is healthy for the flora and fauna of your gut.
