Biscuits: 2 cups sour cream (400 g), 2 eggs, 2 cups sugar, 1, 5 teaspoon of hydrated soda and 2 cups of flour mix. Divide the dough into 2 parts, one part of the dough add 2 tbsp cocoa. Bake at 200 ° for about 20-25 minutes. Can be added optionally to the dough or berries or walnuts.