Cooking with a Crock Pot: Pulled Pork with Rootbeer

Ingredients
1 1 2½ -3 lb pork sirloin roast (I used pork shoulder which was recommended by my butcher and my father as it has more flavor)
½ teaspoon of salt
½ teaspoon of ground pepper
1 Tablespoon of cooking oil
2 medium onions, cut into thin wedges
1 cup of REGULAR root beer (cannot be diet)
2 tablespoons of minced garlic
3 cups of REGULAR root beer (cannot be diet) (two 12 oz cans or bottles)
1 cup of bottled chili sauce
¼ teaspoon root beer concentrate (optional)
Several dashes bottled hot pepper sauce (optional)
8-10 hamburger buns
Lettuce leaves (optional)
Tomato slices (optional)
Directions
1. Trim fat from meat. If necessary, cur roast to fit into a 3½ to 5-quart slow cooker. Sprinkle meat with the salt and pepper. In a large skillet brown meat on all sides in hot oil. Drain off fat. Transfer meat to cooker. Add onions, the 1 cup of root beer, and garlic.
2. cover and cook on low-heat setting for 8-10 hours or on high-heat setting for 4-5 hours.
3. Meanwhile, for sauce, in a medium saucepan combine the 3 cups of root beer and the chili sauce. Bring to a boil; reduce heat. Boil gently uncovered, stirring occasionally, about 30 minutes or until mixture is reduced to 2 cups. If desired, add root beer concentrate and bottled hot pepper sauce.
4. Transfer roast to a cutting board or serving platter. Use a slotted spoon, remove onions from cooking juices and place on serving platter. Discard juices. Using 2 forks, Pull meat apart into shreds. To serve, line buns with lettuce leaves and tomato slices, if desired. Add meat and onions, spoon on sauce.