sentence: whisk an egg sour cream water milk and flour sentence: knead and roll the dough and cut out pieces sentence: wrap the cabbage and drain the water out of it and grind the cabbage sentence: add half a stick of butter black pepper and salt sentence: stretch the dough and place a small tsp of filling in the middle fold it and seal it at the edges sentence: cook the pierogies in salted boiling water sentence: spread melted butter on a plate and transfer the cooked pierogies