Slow Cooker Pulled Pork

1/2 Cup Ketchup
1/3 Cup Worcestershire
1/3 Cup Apple Cider Vinegar
1 Tablespoon Ground Mustard
1 Tablespoon Garlic Powder
1/4 Cup Brown Sugar
1 Teaspoon Smoked Paprika
Dash Red Chili Pepper Flakes
Pinch Salt and Pepper
1 Medium red Onion, Chopped
3 Pounds Pork Shoulder, Trimmed of Fat.

Method
1. Combine all ingredients except for onion and pork into crock pot. Whisk all ingredients until well blended.
2. Place pork and onions into mixture, coating both sides of meat.
3. Cook for 8 to 10 hours under "low" slow cooker setting.
4. After meat is cooked, remove from slow cooker onto plate and break apart with fork. If meat has any bones, please discard at this time.
5. Place meat back into warm sauce to reheat.
6. Serve on hamburger buns or Rolls.
7. Enjoy.

Optional: I usually top the sandwich with coleslaw