1. Rince the tomatoes under water and cut them in slices
2. Rince the salad and cut the leaves
3. peel and cut in slices the red onion
4. Cook the beef burger in a pan with some butter
5. Cook the rösti according to your preferences

For the burger

1. Garnish the burger bread with ketchup or mayonnaise, with the cooked beef burger, with 1 or 2 onion slices, with 2 leaves of salad, with one slices of cheddar cheese