Snappy Barbecue Beef Sandwiches
["1 (4 lb.) beef roast", "1 c. ketchup", "1 c. barbecue sauce", "4 c. chopped celery", "1 c. chopped onion", "2 c. water", "2 Tbsp. vinegar", "2 Tbsp. brown sugar", "2 Tbsp. Worcestershire sauce", "1 tsp. chili powder", "1 tsp. salt", "rolls or buns"]
["Place beef in a Dutch oven.", "Combine all ingredients except the rolls; pour over beef.", "Cover and bake at 350\u00b0 for 5 hours, turning beef occasionally.", "Shred beef with a fork.", "Serve on rolls or buns.", "Yield:", "About 24 servings."]
["beef roast", "ketchup", "barbecue sauce", "celery", "onion", "water", "vinegar", "brown sugar", "Worcestershire sauce", "chili powder", "salt", "rolls"]