On Tue, 13 Jan 2015 06:19:02 +0000 (UTC), Whitney Ryan
> wrote:

> Snuffy \"Hub Cap\" McKinney wrote, on Mon, 12 Jan 2015 13:48:29 -0800:
>
> > Just bought some yesterday...
> > www.argostarch.com Walmart 15oz $1.67
>
> The cornstarch is optional, and only really
> needed for storage.
>
> If I make the baking powder on the fly,
> there should be no need for cornstarch.
>
> What I REALLY need is the powdered acid,
> whether it's calcium phosphate or potassium
> hydrogen tartrate (KC4H5O6) from wine casks.
>
> There is none of this at Safeway, Trader
> Joes, or Whole Foods.
>
> Are you saying that Walgreens has the
> powdered acid?

Forget Walgreens. Call a health food store or your local home brew
and wine making supply store for that. If your brewing supply store
can't tell you where to buy food grade (not lab grade) calcium
phosphate, you're SOL. Amazon sells it. Find someone with a Prime
account and you'll get it in two days, with no shipping charges. It
will be a lot faster than trolling for leads here.



--
A kitchen without a cook is just a room