Beef Burger with Lettuce, Tomato, and Cheddar

Method

1. Cook the ground beef in a skillet until browned and cooked through.
2. Toast the hamburger buns.
3. Place a slice of cheddar cheese on each bun bottom.
4. Add the cooked beef patty.
5. Top with lettuce, tomato, onion, ketchup, and mustard.
6. Check that the ground meat reaches 71°C (160°F) throughout before serving.