I am learning to cook. One of the rules Cheryl laid down before we came to Wales was that she was only preparing a meal every third night. If we were to eat the other two nights, Nicola and I would have to figure our way around a kitchen. Slowly, clumsily, with growing daring, we're managing. It's more pleasure than I imagined. There is an artistry to cooking that I've long admired but feared to attempt. A tasty dish from raw ingredients is like a poem from a pile of words, o