The other day I was looking for a recipe that used some leftover buttermilk that I had. I was looking through the recipes at Epicurious and came across this one for Lemon-Ginger frozen yogurt. They also have a cool app for the Iphone/pod if you are interested. I'd always been interested in using fresh ginger and thought that it sounded delicious. After reading the reviews I decided to use Greek yogurt to give it the tang. (One of my favorite treats right now is the tart frozen yogurt.) I enjoyed the finished product. After the initial shock of the tart my son enjoyed it too.