Spiced roast goose

Name: Spiced roast goose
Ingredients: 1 x 4kg whole goose (ask your butcher for the giblets too); olive oil; 1 clementine; ½ a bunch of fresh rosemary (15g); 2 onions; 3 carrots; 3 sticks of celery; 1 handful of fresh bay leaves; 1 lug of port; 2 heaped tablespoons plain flour; 1 litre organic chicken stock; 1 pomegranate; SPICE MIX; 90g star anise; 90g fennel seeds; 75g coriander seeds; 30g Sichuan pepper; 15g cloves; 60g cinnamon sticks; 1 large pinch of saffron; 90g soft brown sugar; 60g sea salt; 30g whole black peppercorns