Classic Hamburger

Ingredients

• Ground beef (80% lean) 500 g
• Salt 0.75 tsp (4.5 g)
• Black pepper, ground 0.5 tsp
• Vegetable oil 1 tsp
• Hamburger buns 4 (220 g)
• Iceberg lettuce leaves 4 (40 g)
• Tomato 1 medium (120 g)
• Onion 1 small (60 g)
• Ketchup 4 tbsp (60 g)

Instructions

1. 1

   Divide the beef into 4 portions of 125 g and shape them loosely into patties about 1.5 cm thick and slightly wider than the buns; press a shallow dimple into the center of each.

2. 2

   Cut the tomato into 8 slices, slice the onion into thin rings and wash and dry the lettuce leaves.

3. 3

   Heat the oil in a cast-iron frying pan over medium-high heat and season the patties on both sides with the salt and pepper just before cooking.

4. 4

   Cook the patties for 3-4 minutes per side without pressing them, until well browned and 71C in the center, then rest them for 2 minutes.

5. 5

   While the patties rest, split the buns and toast the cut sides in a dry pan for about 1 minute.

6. 6

   Spread the ketchup on the bottom buns and layer on the lettuce, patty, 2 tomato slices and onion rings.

7. 7

   Close with the top buns and serve at once.