400g/14oz floury potato (such as King Edwards), peeled, chopped
2 tbsp chopped fennel leaves, from the top of the fennel bulbs
750g/1lb10oz fennel bulb, trimmed and roughly chopped
4 shallots, peeled and finely chopped
salt and freshly ground black pepper
2 tsp fennel seeds, crushed
1-2 tbsp light olive oil
salt
1 tbsp sugar
125g/4陆oz unsalted butter
60g/2陆oz unsalted butter
400ml/14fl oz single cream
4 x 175g/6oz salmon fillets
150ml/5fl oz red wine