In reply to LastBoyScout:
In a pot with chopped onions, carrots, leek, coriander seeds, peppercorns, cinnamon bark and if you wish some fresh orange juice. Top the pot up with water to cover the ham. Poach gently until temperature reaches 55 degrees. Then turn the water off and let the joint cool in the liquid. Make sure the Internal temp hits 60 deg C. Remove skin with a knife and score the fat into diamonds, sticking a clove in each one.
For the glaze just freestyle some sweet and acid with wholegrain mustard e.g equal parts honey and black treacle (or a brown sugar like muscavado) juice and zest of an orange or two plus a tablespoon of wholegrain mustard. Oven at 200 deg C, pour over the glaze and then baste every 5 minutes until the glaze has thickened up and coats the meat in its glossy fineness (about 30 mins or so). I would recommend lining the roasting pan with tinfoil as burnt sugar is a bugger to clean up.
For desalting the gammon, I would just plonk it in a pot of water, bring it to the boil then take it straight out. This also gets rid of some impurities as evidenced by the scum you will see. I think modern curing methods make soaking overnight unnecessary.
Post edited at 18:20