Make Ahead Barbecue
["4 to 5 lb. Boston butt or fresh ham", "1 large onion", "3 Tbsp. brown sugar", "3 Tbsp. dry mustard", "1/4 tsp. red pepper", "1/4 tsp. black pepper", "1 c. vinegar", "1 1/2 c. water", "1/2 c. ketchup", "1/2 c. Worcestershire sauce", "1 tsp. salt"]
["Put meat in roaster.", "Mix onion, sugar, mustard, pepper, vinegar, water, ketchup, Worcestershire sauce and salt.", "Pour over meat.", "Cover.", "Cook in a 325\u00b0 oven for 5 to 6 hours until meat is very tender (falls off the bone).", "Let meat and drippings become cold.", "Remove all fat.", "Chop meat and reheat in sauce.", "May be frozen."]
["Boston butt", "onion", "brown sugar", "dry mustard", "red pepper", "black pepper", "vinegar", "water", "ketchup", "Worcestershire sauce", "salt"]