Barbecue Sauce - cooking recipe

Ingredients

1 qt. tomato puree
2 qt. ketchup
3 Tbsp. minced garlic
1 Tbsp. soy sauce
1 lb. brown sugar
2 tsp. liquid smoke
4 oz. Worcestershire sauce
1/2 c. apple cider vinegar
2 1/2 Tbsp. celery seed
1 Tbsp. red pepper
2 Tbsp. allspice
1/2 c. chopped onion (chop onion in blender and saute)
Tabasco (if you like it hot)

Preparation

Saute onion in olive oil. Mix remaining ingredients and cook for 2 hours slowly.