1-lb hamburger meat, browned (add salt, pepper, chopped onion as desired)
Flour
Milk
After browning the meat, I add 3-4 TBS (up to 1/4 cup) flour to the fat in the pan--I don't take the hamburger out, just sprinkle the flour all over it and then stir it constantly until it bubbles. Then add milk (about 1.5 to 2 cups), stirring constantly until it thickens--boils gently for a couple of minutes.