In a bowl combine beef, garlic, hot sauce, salt and pepper, to taste, being careful not to over mix.
Warm a Frying Pan over medium heat and fry bacon until crispy. Remove to a paper towel-lined plate to drain. Keep heat on the pan and fry a pinch of the beef in the bacon fat to test seasoning. Adjust seasoning, if needed, then form 8 even thin patties, about 1/2-inch thick and set aside.
Sauté onions in bacon fat in Pan until tender, 5 minutes. Place onions and bacon in a bowl with cheese. Form a spoonful of bacon-cheese mixture into a ball, then place in the centre of 4 patties. Top each with another patty and seal the edges.
Griddle burgers over medium-high heat, flipping once until desired doneness is reached, approximately 4 minutes each side for medium. Serve in baps with tomato and salad.