Freshness Burger (Yaba-chō-ten)

Instructions

1. Mix the mayonnaise, ketchup, soy sauce and sugar to make the homemade sauce, then keep it chilled.
2. Shape 4 patties about 1.5 cm thick from the minced beef, salt them at the last moment and season with pepper.
3. Heat the oil in a very hot pan and sear the patties 3 to 4 minutes per side so they stay juicy.
4. Add a slice of cheese on each patty during the last minute of cooking so it melts.
5. Toast the buns cut-side down in the same pan for a few seconds.
6. Spread sauce on each bun, add sliced lettuce, tomato, onion and cucumber, then top with the cheesy patty and close.