Kopytka From Potatoes(Servings:  6)  
["2 lb. potatoes, cooked and peeled", "1 large egg", "15 oz. flour", "salt to taste"]
["Rub warm, cooked potatoes through a sieve or put through a meat grinder.", "Cool the potatoes and beat in egg.", "Add flour and salt.", "Mix; place on a pastry board dusted with flour and knead to a smooth dough.", "Divide the dough into 3 or 4 parts; form into finger-thick rolls and slice diagonally into small dumplings 1-inch thick.", "Cook in a large amount of salted water.", "Take out the cooked kopytka with a straining spoon and drain well.", "On a dish, pour hot butter or pork fat with cracklings over this.", "One small, finely chopped, onion may be fried in the pork fat.", "The kopytka may be cooked a day ahead.", "Before serving, throw them into boiling salted water and bring to a boil only once.", "They will be like fresh.", "They also taste exquisitely if reheated by frying."]
["potatoes", "egg", "flour", "salt"]