depending on the size of you joint calculate the time based on 30 mins per lb and boil the gammon joint for half the total time.
let it stand so you can cut the rind off but dont cut the fat underneath off .
then score the fat in a diamond shape all across. mix the paste and spread all over.place the gloves inbetween all the diamonds roast on gas mark 6 for the remaider of the time

great with your turkey on xmas day