This is an intuitive recipe, with no specific times or temperatures. That being said, since hams are already cooked, the times/temps don't matter too much.
Cured (bone-in) ham butt portion
3-L Coke (enough to half cover ham)
Place ham in deep pot with lid. Pour coke over ham. Bring to boil, reduce heat, cover and boil until tender (or bake in oven, basting occasionally). If liquid boils out, add more coke.
Test by sticking the long tines of a fork into meat to see if it's tender.
This ham may be sprinkled with bread crumbs, brown sugar, or any desired glaze, but it will already be sweet.