Prep: 10 min | Cook: 6 hrs | Serves: 8 INGREDIENTS 1 onion, finely chopped 3/4 c. ketchup 3 tbsp. tomato paste 1/4 c. apple cider vinegar 1 tsp. paprika 1 tsp.  garlic powder   1 tsp. mustard powder  1 tsp. cumin 1 (3- to 4-lb.) pork shoulder, trimmed of excess fat Kosher salt Freshly…...