Ingredients:
2 onions, chopped
6 cloves garlic
1 tbsp chili powder
1 tsp ground black pepper
1 small tin of tomato paste
1/2 cup cider vinegar
1 tbsp Worcestershire sauce
1 boneless pork shoulder trimmed of fat (about 3 pounds)
Method:
Saute the onions in a little oil over medium heat until soft and lightly browned
Add garlic, chile powder and pepper and continue cooking for 1 minute
Add tomato paste, vinegar, Worcestershire sauce
Stir and bring to a boilÂ
Use an immersion blender or regular blender to puree the sauce
Place pork in slow cooker and pour sauce over meat
Cook on low for 12 hours
Use two forks to shred the pork and stir
Add a little more cider vinegar for a tangier taste
Note: traditionally this sort of recipe calls for brown sugar. Feel free to add that if you like it sweet.