'A thick bowl of chowder is spot on in winter. The New England versions, studded with corn or based on tomatoes, seem better for late summer and early autumn eating, but this recipe, from Qu.bec, can be downed when there is two feet of snow on the ground.' - Diana Henry, author of Roast Figs, Sugar Snow serves 4 as a main course 1kg (2lb 4oz) mussels 500ml (18fl oz) dry cider 30g (1oz) butter 2 leeks, cut in fine rings 400g (14oz) potatoes, peeled and cut into 4cm chunks 100ml (3.fl...