As Mark Peel and I were walking around the Santa Monica Farmer’s Market one January day, we saw the most beautiful radicchio I have ever seen. Don’t get me wrong; I love the “rosso precoce” and its cousin, the shorter-leaved “rosso tanivo.” But for the bunched radicchio, instead of the “di Chioggia” we are so used to, Mark chose the “variegato di Castelfranco,” s