I garnished this with thin slices of scallion.
Ponzu and grated diakon really cut the fat of the beef and makes this dish. Because of the acidity of the ponzu, sake will be the best bet. We still have more than 1/4 of the Wagyu stake left. I can make something else.*Tataki: "Tataki" preparation can mean two totally different Japanese cooking techniques. The first is to chop up raw fish as in "Aji-no-tataki" 鰺のたたき. The second is to sear only the surface of the fish or meat and keep the center raw such as in "Katsuo-no-tataki" 鰹のたたき. Beef can be prepared this latter way.