 Water pie. Let's find out about that. A Depression-era recipe is making a comeback. Water pie does not require milk or eggs or items that you can give for a cost plus 10% at your local food outlet. In fact, I think sugar's on sale this week. Yeah, a four-pound bag of Dixie Crystals, two for seven. So here's what you do. All you need to make your own water pie is a crust, water, flour, sugar, and vanilla extract and butter.