Bring a large pot of water to the boil and add the quartered orange, the cloves, the sea salt, bouillon and the peeled celeriac. Cover with a lid and boil the celeriac for 30 minutes. Preheat the oven to 180 °C
1 orange, 6 cloves, 1 tablespoon sea salt, 900 g celeriac
To make the glaze, in a small bowl, stir together the remaining ingredients with 3-4 tablespoons of the celeriac cooking broth. Once the celeriac has been boiled for 30 minutes, carefully remove from the broth and transfer to a roasting tin.
3 tablespoon marmalade, 2 tablespoon cranberry sauce, ¼ teaspoon fine sea salt, ¼ teaspoon onion powder, ¼ teaspoon ground coriander, pinch nutmeg, ½ tablespoon garlic powder, 3 tablespoon vegetable oil
Brush the celeriac with some of the glaze then place in the oven to roast for a further 30 minutes, removing from the oven to re-glaze every ten minutes. At the 30 minute mark, use a skewer to check that the celeriac is soft all the way through. If not, return to the oven for a further 10 minutes or until soft throughout.
Remove from the oven and either slice and serve while hot or leave to cool and slice thinly for cold-cuts.