Slice the beef into strips. In a separate bowl, combine the minced garlic, vinegar, salt, and all the spices. Add the beef to the mixture and mix well. Marinate the beef in the mixture overnight.

Place the marinated beef in a baking pan and bake in the oven until the beef is partially cooked. Add the tomatoes and onions, then return to the oven and bake until the tomatoes, onions, and beef are fully cooked, stirring occasionally.