Okroshka

Okróshka is a cold soup of Russian origin, which probably originated in the Volga region. The classic soup is a mix of mostly raw vegetables (like cucumbers, radishes and spring onions), boiled potatoes, eggs, cooked meat such as beef, veal, sausages or ham and kvass, which is a low-alcoholic (1.5% or less) beverage made from fermented black or rye bread. Okroshka is usually garnished with sour cream (smetana). Later versions that first appeared in Soviet times use light or diluted kefir, whey, ayran, or mineral water instead of kvass. The ingredients are diced and then mixed with kvass just before eating; the ratio of chopped food to kvass is similar to that of cereal to milk. This allows the vegetables to retain their texture. For that same reason, even though the ingredients are similar to those in a Russian salad, the taste of okroshka is quite different from that of the salad.

Source: Wikipedia