Juicy Homemade Cheeseburger with homemade mayonnaise

👨‍🍳 Method

For the Meatball mix

1. 1
   Divide the ground meat into 4 flat round patties, 2 cm thick.
2. 2
   Season the patties on all sides with the salt, black pepper and garlic.

To assemble

1. 3
   Put the egg, mustard, salt and black pepper in the blender jar and blend about half a minute.

   BlenderorStick blenderorFood processor
2. 4
   Add the oil in a thin, slow stream, while the blender is running, until a thick emulsion forms.

   Blender

   💡The thin stream is everything: fat that goes in too fast can't bind, and the sauce breaks. For mayonnaise and hollandaise, if this happens, start with a fresh yolk and slowly add the broken sauce to it; if the sauce is too thick, thin it with a teaspoon of water.
3. 5
   Add the lemon juice and stir. Taste and adjust the seasoning.
4. 6
   Heat a grill pan over high heat and grease lightly.

   StoveGrill pan

   💡A very thin layer of fat, with the excess wiped off with paper towel: too much fat gives spots and fried edges.
5. 7
   Grill the burgers 3–4 minutes per side, until they are browned outside and done to your liking.

   Stove

   💡Don't press the patties with a spatula or flip them more than once: the juices run out and the patty dries out or falls apart. It releases from the pan once the underside is browned.
6. 8
   In the last minute of grilling, place a slice of cheese on each patty and cover until the cheese melts.
7. 9
   Halve the buns and toast them lightly on the grill pan.

   Knife
8. 10
   Spread the mayonnaise, mustard and ketchup on the buns.
9. 11
   Arrange the lettuce and tomatoes in each bun, and top with a hot patty and the onion. Serve immediately with homemade fries.