Cooking WIth Chef Hermann: Double Cheeseburger Los Angeles Style

1/3 cup mayonnaise
1 Tbsp toasted sesame seeds
4 Tbsp unsalted butter, at room temperature
4 Brioche hamburger buns, split
2 lbs ground chuck, shaped into 8-1/4 inch thick patties
kosher salt and freshly ground pepper
2 Tbsp olive oil
8 slices cheddar cheese
4 butter lettuce leaves
4 shiso or sesame (perilla) leaves
4 thin slices tomato
4 thin slices red onion

In a small bowl combine mayonnaise and sesame seeds

Heat a large non stick skillet over moderate heat. Butter the cut sides of the hamburger buns and toast them on the griddle until golden, 4-5 minutes. Transfer to platter
Season the patties with salt and pepper. Brush the griddle with olive oil, add the patties and cook over high heat for 2 minutes. Flip the patties and cook for 2 minutes longer, then top each one with a slice of cheddar cheese. Cook just until the cheese is melted, about 1 minute

Stack  2 burgers on each bun. Top with lettuce, shiso leaves, tomato, and onion. Spread the top halves of the buns with the sesame mayo, close the burgers and serve.