Barbecue - cooking recipe

Ingredients

4 lb. ground beef
2 medium onions
1/2 c. vinegar
1 pt. tomato puree
1 c. ketchup
1 c. brown sugar
2 Tbsp. prepared mustard
1 Tbsp. salt
2 c. celery, cut fine and cooked

Preparation

Brown meat and onions.
Mix rest of ingredients.
Add together and simmer. Serves 25 people.