Dough with milk for buckwheat groats, egg or white cheese fillings

• 25-30 g (1-1½ oz) yeast
• 1 teaspoonsugar

Dissolve the yeast, sugar and 1 teaspoon of flour in 4 tablespoons of warm water and let stand for 15 minutes. Dissolve half the flour in the warm milk, mix with yeast and let rise. When the dough has ris