Organic radicchio this week comes in two types from Morningstar Farm in Claverack, NY
• Chioggia is a purple and white round radicchio with a dense head that's excellent across a variety of uses from salads through risotto to sautéing and grilling
• Castelfranco is a relatively mild heirloom variety with pastel-yellow leaves and speckles and stripes that range from burgundy to violet
