1 bulb garlic, broken up into cloves
12 kumquats, sliced, pips removed
2 oranges, juice only
1kg/2lb 4oz potatoes, left unpeeled, cut into small chunks
few sprigs rosemary
2 large shallots, finely chopped
500ml/18fl oz chicken stock
salt and freshly ground black pepper
1 tbsp duck fat (optional, can use 2 tbsp olive oil instead)
1 tbsp red wine vinegar
2 star anise
50g/1戮oz granulated sugar
dash oil or duck fat
4 duck breasts
200ml/7fl oz red wine