To make guacamole- in a medium bowl mash avocados together with the lime juice. Add salt. Stir in cilantro, tomatoes, and garlic. Mix in cayenne pepper. Cover and refrigerate until needed.
Shape the ground burger into 4 patties. Season on both sides with freshly ground salt and black pepper. Lightly grease the grates of your grill and heat the grill to medium-high heat. Grill hamburger patties until they have reached an internal temperature of 160 degrees. Within the last few minutes of cooking top patties with 2 slices of bacon and a slice of pepper jack cheese.
Split the hamburger buns and lightly toast the halves on the grill. Remove from the grill and set aside. Place a burger patty on each bun. Top with guacamole and the top half of the bun.
Yield: (4 Servings)