What does russians drink that is cold

kvas? water? vodka?

Explanation:

Is that a joke?

Мors. Mors is a cold beverage made from lightly tart berries. Its consistency is much like kompot, although a little thicker, as the boiled berries are mashed, whereas in kompot they are left whole. Most often, mors is made of cranberries, lingonberries, blueberries, or a mix