Indefinable Magic is a series of whimsical and sometimes certifiably arcane ramblings about some aspect of Doctor Who - sometimes a personal reminiscence; sometimes a jokey thought; and sometimes an unnecessarily obsessive delve: but always done with a lightness of touch and devotion to the subject. This time, it's carrots. Yep, you read that right, the history of carrots in Doctor Who (I direct my learned colleague to the word "arcane" above).