01 - 
                Form ground chuck into 1/3 pound balls and refrigerate for 30 minutes.
              
              
              
                02 - 
                Slice white onions very thin using mandoline with safety guard. Squeeze out excess water and refrigerate.
              
              
              
                03 - 
                Crisp up bacon, chop, and set aside.
              
              
              
                04 - 
                Mix mayo, ketchup, mustard, bacon, Worcestershire sauce, apple cider vinegar, all-purpose rub, and red pepper flakes. Refrigerate.
              
              
              
                05 - 
                Heat griddle to medium-high. Add avocado oil and burger balls, spaced 2-3 inches apart. Top with sliced onions and smash with burger press. Season with salt, pepper, and garlic.
              
              
              
                06 - 
                Cook 3-4 minutes, add mustard on top, flip, add pepper jack cheese. Cook about 3 more minutes until cheese melts.
              
              
              
                07 - 
                Toast buns on griddle. Layer with Baconnaise sauce, double smash burgers, more sauce, and top bun.