Add all of the ingredients into a small mixing bowl, and whisk until combined. Transfer into an airtight container and place it in the refrigerator for 6 to 24 hours before using. This helps the flavors to marinate.
Be sure to let the sauce sit for at least 6 hours; otherwise, it just tastes like ketchup!
This sauce can be stored in an airtight container in the fridge for about 10-12 days.