Happy birthday to my favorite (and only) sister! The cake is lemon ... the filling is lemon curd ... and the icing was described as tasting like lemon sorbet--light and tangy and sweet. Just not as cold. I mixed up a regular recipe of the cake batter, but I put it in two 6x2-inch pans. I made one small cake for today, and now have a second one all ready to go in the freezer.