Martha Stewart Living, February 2006
Cut off stem end with a sharp knife, and stand stem on a paper towel, cut-side down, for 5 minutes to dry.
Press cut side onto a large stamp pad, then onto cards, stationery, and more, blotting on paper towel between presses. Vary stamp shapes with other vegetables, such as romaine lettuce stems or even brussels sprouts cut in half.
Large stamp pad
Leafy vegetables make great-tasting salads -- and sumptuous floral-shaped stamps, too. Here, the end of a head of Treviso radicchio yields a roselike print.