For many years I kept the basic ingredient of this pie a secret, and for many years people wondered what was in it. Cream? Butter? Both? Well, for many years no one knew is that the main ingredient (besides chocolate, of course) is tofu! Why tofu? Not to be healthy or because I had anything against dairy, but because it's just easy. Why didn't I tell people? Because many of my picky-eater relatives wouldn't have eaten it if they'd known it was tofu. Finally, one day, after everyone had enjoyed a piece of pie, I let the secret out... but you don't have to. Make this pie, and let everyone think you spent more time making it out of cream and butter. One note: be sure to use silken tofu, not the meatier, textured tofu. Make sure it says "silken" on the box.