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["Dough--------------.", "Mix dough ingredients together.", "You may have to add more liquid or flour to make the dough soft and somewhat sticky.", "Turn onto a floured surface and knead more flour into dough- just enough to make it easier to handle.", "The dough will be slightly sticky.", "Do not over-knead.", "Place dough in an oiled bowl.", "Cover and let rest for 30 minuets.", "Filling-----------.", "Cook onion in butter.", "Mix with potatoes, and add cheese while the mixture is still hot.", "You may substitute Cheez Whiz for the cheddar.", "Let filling cool before using (place in fridge.) If you are using the alternate filling, simply mix those ingredients together.", "Manufacturing--------.", "Set a large pot of water to boil.", "Form walnut-sized balls of the filling.", "Roll out dough on floured surface fairly thinly (3 millimeters, or 0.125 inch).", "You will probably need to add flour as you roll.", "Cut out circles approximately 7 1/2 centimeters (3 inches) in diameter (a wider-mouthed glass should do fine.) Press scraps into a ball.", "Place filling ball in center of dough circle.", "If the dough has a less-floury side, keep that side up.", "Fold dough over ball, and pinch edges to form a half circle.", "To prevent perogies with""horns"