Ultimate Burgers - cooking recipe

Ingredients

2 lb. ground chuck
1 lb. ground sirloin
3 Tbsp. steak sauce
6 extra-large egg yolks
1 1/2 tsp. salt
3/4 tsp. black pepper
4 Tbsp. cold unsalted butter
12 hamburger buns

Preparation

Carefully mix the meats, steak sauce, egg yolks, salt and pepper with the tines of a fork, but do not mash it. Lightly form each burger and lightly press into a patty shape. Make an indention and put a thin slice of butter inside each burger, making sure the butter is entirely encased in the meat. Grill or broil as you would any other burger.