Dough: Warm milk 250 ml Salt 1/3 tsp Yeast 1 tsp Egg 1 piece Sugar 100 gr Butter 100 gr Wheat flour 500 gr For the filling: Unsalted cottage cheese 300 gr Sugar 80 gr Sour cream or yogurt – 2 tbsp Egg white 1 pc. Bake at 170℃ for 2530 minutes