Pork spareribs

SAUCE:

1 1/2 c. catsup
1/2 c. white vinegar
1/2 c. packed brown sugar
1 tbsp. Worcestershire sauce
1 1/2 tsp. dry mustard
3/4 tsp. garlic salt
1/4 tsp. pepper

Simmer spareribs 25 minutes. Remove from pan. Refrigerate until ready to grill. Combine sauce ingredients. Brush sauce on ribs while grilling.