INGREDIENTS
4 lb
pork shoulder roast
1
extra large onion, chopped
1 cup
barbecue sauce
1/2 cup
apple cider vinegar
1/2 cup
chicken broth
1/4 cup
light brown sugar
1 tbsp
prepared yellow mustard
1 tbsp
Worcestershire sauce
1 tbsp
chili powder
2 cloves
garlic, crushed
1 1/2 tsp
dried thyme
8
hamburger buns, split
2 tbsp
soft butter, or as needed