Combine apple cider and water in a saucepan; bring to a boil. Set aside.
Remove skin from the ham. Place the ham, fat side up, on a cutting board;
score fat in a diamond design, and stud with cloves. Place the ham in a shallow
baking pan, fat side up; then coat top with brown sugar. Insert meat thermometer,
making sure it does not touch fat or bone.
Bake, uncovered, at 325 degrees F for about 2 hours (22 to 25 minutes per
pound) or until meat thermometer registers 160 degrees F, basting every 30 minutes
with cider mixture.
Sauce: Combine remaining ingredients in a saucepan; bring to a boil.