From Oonagh Williams of Royal Temptations Catering
I have tried various recipes for gluten-free flour blends. Many use sorghum flour as the main ingredient, but I find that has a bitter taste and requires a lot of additional sugar. I developed the following mix for gluten-free baking.
For one cup of gluten-free mix:
I tend to mix these flours in food processor. The flours do not puff into the air as much, but are still well-blended. The food processor also grinds the flours a bit more and helps eliminate lumps in the potato starch.