Okroshka is a cold summer soup traditionally made by mixing chopped vegetables, meat, and eggs into which fermented beverage?

• A Kvass ✓
• B Kefir
• C Ayran
• D Kombucha

Okroshka (literally 'crumbled bits') dates to medieval Rus' and uses kvass, a mildly alcoholic drink fermented from rye bread, as its classic liquid base.