My secret is out. The perfect, most moist lemon cake is achieved by just using a regular 'ol box of Duncan Hines Lemon Supreme cake...just follow the secret recipe on the side of the box. It's way better than the regular recipe on the back. I guess my only secret now is that I drizzle it with lemon flavored powdered sugar icing.....dammit! There I go telling you my secrets again. Oh well. Munch munch, and enjoy!