Put the gammon in a large pan with the bay leaves, star anise, cloves, 6 allspice berries and 8 peppercorns. Pour over the pomegranate juice to cover the gammon (you may need to top up with water). Add one of the orange halves, then bring to a simmer and partially cover with a lid. Cook for 2 hrs 30 mins, topping up with water as needed to keep the gammon covered. Leave to cool in the liquid for 20 mins, then lift out and place on a baking tray lined with baking parchment.

Heat the oven to 200C/180C fan/gas 6. Cut the skin off the gammon, leaving a 1cm layer of fat. Score lines into the fat at 1/2cm intervals using knife. Bake for 15 mins until the fat is starting to crisp.

Meanwhile, crush the remaining allspice berries and peppercorns with a pestle and mortar. Combine the crushed spices with the molasses, mustard, sugar and 1 tsp orange juice. Remove the gammon from the oven and brush over the molasses mixture. Arrange the orange slices over the gammon, securing them with some cloves.

Turn the oven to 180C/160C fan/gas 4 and return the gammon to the oven for another 20 mins. Brush the honey over the orange slices and bake for another 5-10 mins, or until the glaze is bubbling. Leave to rest for at least 20 mins, then serve with bay leaves and pomegranate seeds scattered over, if you like.