Part of the 12-course Holy Night feast on January 6, this soup is thickened with Soviet roux: oil, flour, and the liquid rendered from sautéing onions.
Where to Get It: Heritage foods–driven Russian Vodkaroom No. 1 in St. Petersburg. 4 Konnogvardeyiski Blvd.; 011-7-812-570-64-20; vodkaroom.ru
Get more holiday travel inspiration.