A Cheeseburger with a Southwestern citrus twist Step 1 Preheat an outdoor grill for medium heat.Step 2 To make the guacamole, mash the avocado in a medium bowl with the juice of half a lime, jalapeno, tomatoes, 1/4 cup onion, and 1 1/2 teaspoons of minced garlic; season to taste with salt, and set aside.Step 3 In a large bowl, mix together beef, the juice of half a lime, 1 tablespoon garlic, chili powder, 1/2 cup diced onion, and cilantro. Form the meat into 6 patties.Step 4 Cook the burgers ...