Score fat and stud with cloves. Pour cola over ham. Sprinkle 1/2 teaspoon ground cloves and pepper over ham. Bake uncovered at 325 degrees for 3 to 3 1/2 hours. Baste with the cola.

RAISIN SAUCE FOR HAM:

3/4 c. firmly packed brown sugar
3/4 c. tbsp. flour
1/4 tsp. plus 2 tbsp. vinegar
2 1/2 c. water
3 tbsp. prepared mustard
3/4 c. raisins

Combine sugar and flour in a heavy saucepan; stir well. Add rest of ingredients. Boil, reduce heat and simmer for 30 minutes.