Making bierocks: brown a pound of 85% lean ground beef in a Dutch oven or other fairly deep heavy-bottomed pan. DO NOT DRAIN.
(If you're vegan, use your favorite equivalent. I've done it with huge batches of assorted mushrooms, with neutral vegetable oil to make up the fat. TVP or seitan would be excellent too.)
Remove the ground beef with a slotted spoon and keep warm.