Barbeque Beef

3-4 pound beef chuck roast
onion

Cook in crockpot on low for 10-12 hours (I cooked it overnight).

Shred the beef and add the following sauce and cook for another hour.

1 cup ketchup
1/2 cup Hines chili sauce
1/4 cup vinegar
2 tsp salt
4 tbsp lemon juice
4 tsp worshire sauce
1/2 cup brown sugar