01 - 
                Pat the pork shoulder dry with paper towels and set aside.
              
              
              
                02 - 
                In a small bowl, mix light brown sugar, salt, garlic powder, mustard powder, smoked paprika, onion powder, and black pepper thoroughly.
              
              
              
                03 - 
                Rub the pork evenly with the prepared dry rub and place it into an 8-quart or larger slow cooker. Pour liquid smoke over the pork. No additional liquid is necessary.
              
              
              
                04 - 
                Cover and cook on low for 10 to 12 hours until the pork is very tender.
              
              
              
                05 - 
                While the pork cooks, combine apple cider vinegar, ketchup, brown sugar, granulated sugar, and salt in a small saucepan over medium heat. Whisk constantly until sugars dissolve, about 3 minutes. Remove from heat and stir in red chili flakes and black pepper. Allow to cool.
              
              
              
                06 - 
                Remove pork from slow cooker. Drain excess fat as desired but reserve some cooking liquid for moistening if reheating later. Shred the pork and chop into smaller pieces.
              
              
              
                07 - 
                Return shredded pork to slow cooker. Drizzle desired amount of sauce over pork and gently stir to combine.
              
              
              
                08 - 
                Cook on low for an additional hour to meld flavors. Serve immediately on buns with optional coleslaw and extra sauce.