1. Heat the grill to medium-high heat.

2. To make the burger sauce: In a small bowl, combine all of the ingredients together until well incorporated. Set aside.

3. To make the burgers: Use a kitchen scale to measure out 6 ⅓-pound balls of ground beef, and then form them into 3/4-inch thick patties. Make a thumb indent in each patty. The indent will help the patty hold its shape as it cooks, rather than swelling — and that will help it cook more evenly.

4. Generously season both sides of the patties with salt and pepper.

5. Place the patties on the hot grill and cook, covered, for 5 to 7 minutes. Flip the patties and cook them for another 5 minutes.

6. Top each patty with 3 half strips of bacon and 2 slices cheddar, and cook the patties, covered, for 1 to 2 minutes, or until the cheese is melted.

7. Remove the patties and set them aside to rest for 5 minutes.

8. Meanwhile, toast the buns on the grill for 2 minutes, or until they’re golden and have nice grill marks.

9. Top each of the warm buns with a burger patty, burger sauce, lettuce, tomato and onion.