Hamburger Ingredients Beef minced 1 pound Onion 1 Vegetable salt 1 \2 tsp Black pepper pinch Olive oil 2 tbsp Ketchup 2 tbsp Mayonnaise 2 tbsp Lettuce leaves 5-6 Tomato 1 Cheese 5-6 slices Instructions Put the minced meat in a bowl, add grated onion, vegetable salt and black pepper. Stir. Form burger patties and fry in olive oil until golden brown on both sides. Assemble the hamburger. Spread a little ketchup or tomato sauce and mayonnaise on the bun. Put lettuce leaves and a patty on the bun. Put a slice of cheese and a slice of tomato on top. Cover with a second bun. Serve