But never about the real secrets, the ones you never told, about things done and heard and seen. So many secrets that you were afraid they might leak. Seeing a giant without his trousers was hardly worth commenting on compared to some of the things that a witch might see.

No, Tiffany did not envy Petulia her romance, which surely must have taken place in big boots, unflattering rubber aprons and the rain, not to mention an awful lot of ‘oink’.

She did, however, envy her for being so sensible. Petulia had got it all worked out. She knew what she wanted her future to be, and had rolled up her sleeves and made it happen, up to her knees in ‘oink’ if necessary.

Every family, even up in the mountains, kept at least one pig to act as a garbage can in the summer and as pork, bacon, ham and sausages during the rest of the year. The pig was important; you might dose Granny with turpentine when she was poorly, but when the pig was ill you sent immediately for a pig witch, and paid her too, and paid her well, generally in sausages.

On top of everything else, Petulia was a specialist pig borer, and indeed she was this year’s champion in the noble art of boring. Tiffany thought you couldn’t put it better; her friend could sit down with a pig and talk to it gently and calmly about extremely boring things until some strange pig mechanism took over, whereupon it would give a happy little yawn and fall over, no longer a living pig and ready to become a very important contribution to the family’s diet for the following year. This might not appear the best of outcomes for the pig, but given the messy and above all noisy way pigs died before the invention of pig boring, it was definitely, in the great scheme of things, a much better deal all round.