Dreamland-style BBQ Sauce

Ingredients:

• 1 (28 oz.) can tomato purée
• 1/3 cup yellow mustard
• 3 cups water
• 1 1/2 cups cider vinegar
• 1/4 cup dark corn syrup
• 2 Tbsp lemon juice
• 1 Tbsp granulated sugar
• 1 Tbsp brown sugar
• 2 Tbsp chili powder
• 1 Tbsp dry mustard
• 1 Tbsp paprika
• 2 tsp cayenne pepper
• 2 tsp onion powder
• 1 tsp salt
• 1 tsp black pepper, coarsely ground
• 1/2 tsp garlic powder