No, it's not a crab apple corer (although we suppose you could use it for that) — it's a radish rose maker from the kitchen tool company J.B. Prince. It's been around for a long time, but you'll probably only find it in restaurant kitchens — until now, that is.
With the rose trend in full swing (apples, avocados, what's next?), we think it's time for the radish rose maker to go mainstream. While it does have a more limited skill set than, say, a good paring knife, if you're a frequent entertainer who likes to surprise and delight your guests, this might just be your next impulse purchase.