Singe all the hair off the trotters, then bone them out. Chefs have likened this to being as easy as removing a kid glove, but if you don’t find this, don’t get disheartened. Start at the other end from the hoof, cut under the skin as close to the bone as possible (avoid cutting through the skin), work your knife further down the trotter following the bone round, you should get down to the first claws! Now roll the skin down the trotter towards the nails, you come to the two nails sticking out to the side, cut these at the join so they stay part of your trotter skin, ease the skin down a wee bit further to the main joint, before the cloven hooves!! Give this a firm bend until it cracks, and finish splitting with a knife. Sprinkle the trotter skins with salt and put them in the fridge.