For the very best result, start this recipe a day ahead by brining your pork shoulder overnight to release the flavour and maintain the moisture. Any leftovers are delicious served with baked beans, or try them with Baked eggs with piperade and sorrel (page 184). Old Bay seasoning is available from most good grocery stores. However, if you can’t find it, the main flavours are mustard, paprika, celery salt, bay leaves, black pepper, chilli flakes, mace, cloves, allspice, nutmeg, cardamom and ginger.