Best Ribs Ever

I am not a ribs person. I don't really like to chew meat off the bone, but our friend Kimball has found the best ribs recipe. Chris made them for our Memorial day lunch and I loved them. Here is the recipe. The sauce takes a little time, but they just fall off the bone and they are soooooo good.

Ingredients
1½ cups water
1 cup white vinegar
½ cup tomato paste
1 tbsp yellow mustard
2/3 cup dark brown sugar, packed
1 tspn hickory flavoring liquid smoke
1 ½ tspn salt
½ tspn onion powder
¼ tspn garlic powder
¼ tspn paprika

Preparation & Cooking Instructions
Make the barbecue sauce by combining all of the ingredients for the sauce in a medium saucepan over medium heat When it comes to a boil, reduce heat and simmer sauce, stirring often, for 45 to 60 minutes or until sauce is thick.
When you're ready to make the ribs, preheat the oven to 300°F.
Brush sauce over the entire surface of each rack of ribs.
Wrap each rack tightly in aluminum foil and arrange the packets on a baking sheet with the seam of the foil facing up.
Bake for 2 to 2½ hours or until the meat on the ribs has pulled back from the cut ends of the bones by about ½".
When the ribs are just about done, preheat your barbecue grill to medium heat.
Remove the ribs from the foil (careful not to burn yourself- the liquid inside will be hot!) and grill them on the barbecue for 4 to 8 minutes per side or until the surface of the ribs is beginning to char.
Brush sauce on both sides of the ribs a few minutes before you remove them from the grill. Just be sure not to brush on the sauce too soon or it could burn. Serve the ribs with extra sauce on the side and lots of napkins.