AAARGH! Now my cookies didn't rise!? Need a New Corn Free Baking Powder

[Shelsi]

Ok something is going on here. First my cake didn't rise but it was a new recipe and I figured I just did something wrong. Now I just made some cookies (which taste awesome btw and are corn, dairy, egg, and wheat free if anyone is interested in the recipe) and they are flat! So now I'm thinking my baking powder isn't working. It's Mrs. Roben's brand from allergygrocer.com

Anyone else have problems with it? I did buy it about 6 mos ago.

[Chinese Pistache]

I use the one from Hain. It's worked great so far.

[kjbrown92]

I make my own - equal parts tapioca starch, baking soda, and cream of tartar and it works just fine. I've used EnerG (which is calcium carbonate) - it says to use twice as much, but it gives an acidic taste to things.

[Jadethehut]

Yup, I use twice the amount of cream of tartar than the other two ing's, and supposedly any flour works.. I think I used amaranth in mine and it works great.