1.Combine pork, bay leaves, peppercorns, cloves, onion, celery, sugar, vinegar and enough of the water to barely cover pork in 8-litre (32-cup) pressure cooker; secure lid. Bring cooker to high pressure. Reduce heat to stabilise pressure; cook 30 minutes.
2.Release pressure using the quick release method; remove lid. Cool pork, covered loosely in cooking liquid.
3.Serve warm or cold.
Cover and refrigerate overnight to make wonderful sandwiches, don’t forget the mustard or a favourite pickle, chutney or relish. If you have an electric pressure cooker you won’t need to reduce the heat to stabilise pressure, your cooker will automatically stabilise itself. Always check with the manufacturer’s instructions before using. Pickled pork is a little old-fashioned, it might be necessary to order it from the butcher. The shoulder cut used here is also called a “hand” of pickled pork.