I just buy so ordinary crust. You could try to make your own but i don't know much about that
As for the Cream of Tartar.... Ya, i don't know what it is either. I just happened to have in our spice cabinet. The funny thing is that it is 7 years old... I'm not dead yet so it must be okay. hehe
I've baked a few times with baking powder but i don't use it often.
Man we were gonna have a game night at my buddy's house but he wasn't feeling great so he canceled, which throws my dinner plans up into the air, so I guess it's time to order a pizza or something