Barbecue Sauce

1 onion, chopped
2 Tbsp. oil
2 Tbsp. vinegar
2 Tbsp. brown sugar
1/4 cup lemon juice
1 cup catchup
3 Tbsp. Worcestershire sauce
1/2 tsp. prepared mustard
1/2 cup water
1/2 cup chopped celery
salt and pepper to taste

Brown onion in oil. Add remaining ingredients and simmer for 30 minutes.