BBQ Baby Back Ribs

Ingredients:

1 1/2 cups water
1 cup white vinegar
1/2 cup tomato paste
1 Tablespoon yellow mustard
2/3 cup dark brown sugar, packed
1 teaspoon Liquid Smoke
1 1/2 teaspoon salt
1/2 teaspoon onion powder
1/4 teaspoon garlic powder
1/4 teaspoon paprika
2 racks baby back ribs

Instructions

Make sauce by combining all of the sauce ingredients in medium saucepan over medium heat. When it comes to a boil, reduce heat and simmer, stirring often, for 45 - 60 minutes, or until sauce is thick.
This can be made ahead and refrigerated.

On the morning that you plan to serve the ribs, prepare the ribs.
Preheat oven to 300 degrees.
Remove the membrane from the ribs. Brush the entire surface of the ribs with some of the sauce. Wrap each rack tightly in aluminum foil. Arrange packets on baking sheet with foil seam facing up.
Bake for 2 - 2.5 hours or until meat on the ribs has pulled away from the cut end of the bone by about 1/2 inch. Remove from oven.
Preheat the grill to medium heat. Remove ribs from foil. Grill them on the barbeque for 4 - 8 minutes per side or until the surface of the rib is starting to char.
Brush sauce over both sides of the ribs a few  minutes before you remove from the grill.
Be sure not to brush sauce on  them too soon or it will burn.
Serve ribs with extra sauce.