Preparation / Directions:
In a medium saucepan, cook sugar over medium heat until it beings to melt, shaking pan occasionally (do not stir). Reduce heat to low and add onion. Cook and stir 5 minutes until sugar is golden brown.
Carefully and gradually, add the boiling water, stirring constantly. Whisk in remaining ingredients.
Bring to a boil, reduce heat, and simmer, uncovered for 10-15 minutes or until desired consistency.
Brush sauce onto both sides of ribs during the last 10 minutes of grilling.