1 1/2 c. chopped onion
2 tbsp. butter
1 (22 oz.) bottle ketchup
1 c. water
1/2 c. chopped celery
1/4 c. lemon juice
3/4 c. brown sugar
1 tbsp. Worcestershire sauce
1 tbsp. salt
2 tsp. vinegar
1 tbsp. mustard

Cook a 4 pound chuck roast in a pressure cooker for 1 hour. Let cool in pan for 1 1/2 hours. Pull meat apart. Saute onions in butter; add meat and other ingredients and simmer for 30 minutes. Serves 24.