Plump raisins by bringing to boil in just enough water to cover. When soft mash to a paste.
Saute onion in butter, add garlic and raisin paste. Simmer until very soft then add rest of liquids. Bring to boil then simmer over low heat stirring often for about 30 min. Add spices and let simmer another 30 min. to several hours. Add a little water if it needs thinning while it simmers.
28 oz. ketchup 2 cups water 1/2 cup prepared mustard 1 & 1/2 cups cider vinegar 1/2 cup dark Karo syrup 1/4 cup lemon juice 1/2 cup brown sugar 3 tbsp. chili powder 2 tbsp. cayenne pepper 1 tbsp. paprika 1 tbsp. ground mustard 1 tbsp. onion powder 1 tbsp. garlic powder 1 tsp. salt 1 tbsp. black pepper