M&S Pedro Ximenez Sherry "Forget most of your assumptions about sherry: this deep, dark, treacly stuff is like Christmas Pudding in a glass. I love it on the rocks as an after-dinner drink, but it also makes for a great instant pud poured, affogato-style, over vanilla ice-cream. And I should confess that I extravagantly soak the dried fruits for my Christmas Pudding in this heavenly stuff, too." Nigella Lawson