Spring Creek Barbecue Sauce Copycat Ingredients from Here.

1 cup soy sauce
1/3 cup white vinegar
1 cup ketchup
1 cup brown sugar
1/2 an onion
3 cloves garlic
1 tablespoon Worcestershire sauce
1 teaspoon mustard powder
1 teaspoon black pepper
1 teaspoon liquid smoke
1/2 teaspoon dried parsley
1/2 teaspoon dried thyme

1. Chop the onion and the garlic cloves into small pieces.
2. Combine all ingredients in a blender or food processor.
3. Puree sauce until smooth
4. Transfer the sauce to a medium saucepan
5. Bring the mixture to a boil.
6. Then reduce heat and simmer for 30-60 minutes, until the sauce reaches the desired thickness.

The sauce will stay good in the refrigerator for about three weeks.