Texas Barbecue
["4 lb. boneless chuck roast", "1 medium size onion", "1 c. catsup", "1/4 c. Worcestershire sauce", "1/4 c. vinegar", "1/4 c. brown sugar", "1 tsp. salt", "1 tsp. celery seed", "1 Tbsp. chili powder", "1 1/2 c. water"]
["Sprinkle roast with salt, pepper, garlic powder and Worcestershire sauce.", "Roast, covered, 4 hours at 275\u00b0.", "Cool and pull apart.", "Combine 1 medium onion (chopped with the meat). Bring last 8 ingredients to a boil and simmer for 30 minutes. Pour over meat and onion mixture.", "Serve on warm buttered hamburger buns."]
["chuck roast", "onion", "catsup", "Worcestershire sauce", "vinegar", "brown sugar", "salt", "celery", "chili powder", "water"]