On Wed, 14 Jan 2015 15:07:24 +0000 (UTC), "Danny D."
> wrote:

>Stormin Mormon wrote, on Wed, 14 Jan 2015 09:11:28 -0500:
>
>> By the time you endure the expense of the ingredients,
>> you'd have been better tt go buy baking powder at your
>> grocery.
>
>Baking powder, at the store, is about $6 per pound.
>
>Baking soda, alone, is five cents a pound.
>Cream of tartar is seven dollars a pound.
>Corn starch, if used, is two dollars a pound.
>
>So, it would seem that the entire expense of the baking
>powder is in the cream of tartar.
>
>Because of that, one would expect grocery store suppliers
>to skimp on that particular ingredient, substituting
>something cheaper instead.
>
>Do they?

Do your cakes rise?

If so, what they sell is good enough. I doubt if Arm & Hammer has
changed its forumula. Those who bake several times a week would notice
and it would ruin their reputation.