Salt and pepper
Fold aluminum foil so that there is a double layer. Put hamburger (about the size of a small hamburger) on the center of the foil. Drizzle a small amount of oil on it (about ½ tsp). Place carrots and potatoes (to your liking) on the hamburger, then onions. Fold over foil edges to make a flat packet. Be careful to fold over every edge so the package doesn’t leak. Use tongs to place it right on the coals. When you hear it sizzle, flip it. Flip it often and cook for 7-10 minutes. Open carefully (the foil will be hot!) and poke a potato with a fork. When it pierces easily, supper is ready. Serve with catsup.