1 lb 500g lean ground beef
1/2 cup 125mL dry bread crumbs
1/2 cup 125mL water or milk
1 tsp 5mL salt
1/4 tsp 1mL pepper
1 tsp 5mL Worcestershire sauce (optional)
1/3 cup 75mL chopped onion (optional)
Relish, ketchup and onion for garnish
Hamburger bun, split and buttered
Sliced mushrooms (optional)
Condensed mushroom soup (optional)