Green Tea Cookies

I’ve adapted a classic American refrigerator-type cookie to accommodate a traditional Japanese ingredient—powdered ceremonial tea. Instructions are given here for making elegant two-toned leaves and some swirls with the leftover dough. You might want to play around with the dough to make more distinctive or exotic designs of your own. No cookie, though, should be so large or so thick that it takes more than 15–20 minutes to bake in a preheated 300-degree oven, since the jade-colored tea pow