Braai Burger

Mix the ground beef with salt, black pepper, Worcestershire sauce, and ketchup

Shape 8 patties, fry them in a little bit of butter until they're browned on both sides

Melt the remaining butter or margarine and mix it with orange zest and soy sauce

Brush the entire surface of each hamburger patty with this mixture

Cut in half and place one burger in each bun

Wrap each one in aluminum foil and bake in a moderate oven preheated for 30 minutes

If desired, you can add a slice of onion on top of each patty before baking.