Chicken and corn soup

In a large pot place one whole chicken and whatever chicken trimmings you have hanging about from other culinary adventures/disasters – wings, necks, bones, carcasses – a few slices of green ginger, a few whole star anise, 6 peppercorns, a few cloves of garlic (unpeeled and slightly bashed about) coriander stems, tops of spring onions, parsley stems, a few bashed up lemongrass stems, a quartered