1 - 2 liter bottle Root Beer
 1-1/2 - cup apple cider vinegar
 1/2 - cup ketchup
 1/2 - cup yellow mustard
 2 - Tablespoon lemon juice
 2 - Tablespoon Worcestershire Sauce
 1 - Tablespoon Tabasco
 1 - teaspoon Kosher salt
 1 - teaspoon black pepper
 2 - Tablespoons cold unsalted butter
  
 1 - 8 pound Pork Shoulder
 2 - heads garlic, cloves separated and peeled
 Salt (to taste)
 Pepper (to taste)
 Root Beer BarBQ Sauce
  -  
In a large saucepan over medium heat, reduce the root beer to 1 cup for about 1 hour.  
  -  
Add the Apple Cider Vinegar, Ketchup, Yellow Mustard, lemon juice, Worcestershire Sauce, Tabasco, salt and pepper.  
  -  
Stir well and simmer for twenty (20) minutes.  
  -  
Finish the sauce by whisking in the cold butter for extra body and flavor. 
 
 Preheat oven to 225 degrees.
  -  
In a large roasting pan, place the pork shoulder, fat side up.  
  -  
Season well with salt and pepper to taste.  
  -  
Toss two (2) heads of garlic cloves that have been peeled, but put cloves left whole around the pork. 
  - Cover well with heavy-duty aluminum foil.   
 - Slow cook in the oven until tender and falling apart and the internal temperature reaches 160 degrees.   
 - This should take about 6 to 8 hours.   
 - Remove from the oven and let the pork rest for 20 to 30 minutes.   
 - With 2 forks, pull apart the meat into small chunks.   
 - Toss with the root beer BBQ sauce and serve.