In article >,
Tony Hwang > wrote:

> Whitney Ryan wrote:
> > Where can one buy food grade cornstarch &
> > calcium phosphate?
> >
> > I bought a ton of Baking Soda at Costco
> > (sodium bicarbonate), and I want to make
> > a small amount of baking powder.
> >
> > Baking powder, as far as I can tell, is
> > baking soda + cornstarch + "cream of tartar"
> > which is usually either calcium phosphate
> > or potassium hydrogen tartrate (KC4H5O6).
> >
> > I went to Safeway, Trader Joes, and Whole
> > Foods, but none had the missing ingredients,
> > only one of which is required (the cornstarch
> > is optional but the acid tartrate is not.
> >
> > Where can one buy food grade cornstarch &
> > calcium phosphate?
> >
> > Cream of Tartar
> >
> Hi,
> Just buy Aluminum free baking power or yeast from a health food store.
> No messing around making your own.

Just curious -- what is the problem with aluminum in baking powder?

Isaac