I decided to mix up a batch of the flour mixture today. I tried using one of my Tupperware cereal containers and it worked quite well. I could put all my flour in it and then shake it to mix them together. It will also work to put it into the freezer to store.
I also wanted to figure out how much this mixture cost to make. I
used 2 bags of Bob's Red Mill White Rice Flour + 1 Cup, 1 Cup of Ener G Potato Starch and 1 Cup of Tapioca Flour / Starch from my local health food store. The total was about $11.50 for a little over 4 lbs of flour mixture (11 cups).
Off to do more baking..........
To your health!