Cherry Coke Ham

I had this ham first at my friends, Dicy and Joey's home.  Apparently this is Elvis's favorite ham, which explains a lot about the later years...  I like making this ham to simultaneously honor Dicy, and find new and innovative ways to consume Cherry Coke.

5 lb pre-cooked ham (shank or butt, preferably bone in--or spiral cut ham)
4 cans Cherry Coke (NOT Diet)
1 onion, quartered
1 jar cherry jam (NOT jelly)
Cloves

Bring ham onion and coke to a boil on stove in large covered stockpot.  Transfer to oven and bake at 10 minutes per pound at 325 degrees.

Remove from oven and place 1/2 remaining liquid in medium size fry pan and reduce by half.  Add jam to fry pan and reduce to taste.  Score top of ham with diagonal crisscross incisions, and insert cloves into cross crosses.  Spoon half of glaze onto the ham.

Return to the oven for 20 minutes uncovered.  Slice and serve with remaining glaze.