Place the soaked ham in a large pan, with the onions, cloves, peppercorns and bay leaf. Cover with water, bring to the boil and skim away any impurities. Leave the ham to simmer, allowing 20 ...

Pour over the soy sauce and ginger beer ... ahead – chill the ham and stock until ready to roast. To make the glaze, strain the stock into a saucepan and bring to the boil.