The oven is preheated to 150 degrees Celcius with convectional heat.
The ham is taken out of the fridge and unpacked. Remove the net if it is sitting on and discard it. Then score the skin diagonally in each direction.
Place the ham in a rack over an ovenproof dish. Put 1 liter of boiling water in the dish.
Place the dish in the middle of the preheated oven and now cook the ham for approx. 2.5 hours, or until the core temperature is 70 degrees Celcius.
Refill with water if the dish under the ham is drying out.
Mix the ingredients for the glaze together in a small bowl and stir it thoroughly together.
When the ham has reached the core temperature, take it out of the oven and spread the glaze over the top.
Turn up the heat in the oven to 240 degrees Celcius, still with convectional heat.
When the oven has reached 240 degrees Celcius, put the ham back in the oven, and cook the ham until the glaze bubbles up.
Take the ham out of the oven and let it rest uncovered for approx. 10 minutes before cutting out and serving.