Getting biscuit mix to rise...again Was looking through my pantry and I found some instant biscuit mix that is still good by date. When I tried making a batch of the mix, the dough did not rise at all. I made something that resemble a brick.

I was curious if I could add some double action baking powder to the mix would bring the mix back to life?

If so how much would I add? 1/4 TSP?, 1/2 TSP?

All I have on hand is double action baking powder.
I'm in the middle of class (school), and I don't have a ton of time to type anything out, so I'll point you in this direction:

http://www.thekitchn.com/thekitchn/food-science/leaveners-fats-the-science-of-great-biscuits-109416

Should help, covers the science. The answer will be found, plus more!