BBQ Sauce by Dave

1 c. dry minced onion
4 lbs. margarine
1/2 c. granulated garlic
1/4 c. celery seed
3 Tbsp. salt
3 lbs. brown sugar
2/3 c. dry mustard
2 quarts cold water
1 quart plus 1 c. apple cider vinegar
2/3 c. chili powder
2 quarts hunt's tomato paste
6 quarts hunt's tomato ketchup
1 quart Worcestershire sauce
1 Tbsp. ground cayenne pepper, optional

Method: Bring water and vinegar to a boil. Reduce heat and add dry mustard and chili powder and stir well. Add rest of ingredients and simmer for 15 minutes. Let stand refrigerated for 24 hours.
Dave says to use a wisk to stir the sauce; use a stainless steel or enamel pot; and when adding ingredients, stir after each ingredient is added.
Makes: 4 gallons