I am the last person you should ask: ‘what kind of Gluten free flour do you use’? So, instead of waiting for you to ask, I’ll make a stab at telling you. My answer to the question above is rather complex. That is to say, I have not condensed my answer to a usefully short reply. But here is the what I have found:
I use a number of flours that about 4 years ago I would have labeled ‘exotic’. In fact, I now have a flour stock that looks like it belongs in an apothecary (and another cabinet that is an apothecary, but that’s a different story). From the South American supergrain Quina flour to the (slightly odd) Italian Chestnut flour, my chosen powders are collected from around the world. I also us a considerable amount of Buckwheat since it’s pretty cheap. (Don’t let the Buckwheat name fool you, it is not related to Brussels sprouts. It’s actually in the same family as Rhubarb and Burdock1. Oh, that means it’s not related to wheat either.)
So, when mixing up a flour for a recipe, I try to envision the end product, and then examine my opinion of my flours. I usually have some fine powdery types like Tapioca (my favorite), Arrowroot, or Potato starch (I haven’t used potato). I also keep some ‘soft’ flours, like Sorghum, Quina, or Amaranth, and some dense, or oily flours, such as those from Hazelnuts, Walnuts, or Chestnuts (Chestnut flour has a very smokey flavor, which is amazing–but use sparingly). I also think about using stronger tasting flours such as Buckwheat, but it depends on what I’m making. It needs to balance with the other flavors. I have started toying with Rice flour, but it sucks all the moisture out of my baked goods, so I’m keeping it around for very moist recipes. I think it works okay for dusting a surface to roll out dough, especially since I don’t like throwing away expensive flours.
So, how do I choose? First off, I have had very little success making an all-purpose-blend. If I’m mixing flour for a nice moist chocolate brownie, I’ll lean toward soft and oily flours. If I want a doughy-soft fluffy bread-like cakes, I go for mostly soft flour, but some powdery, and I’ll focus on trying to make things stick together. Now, this sounds a lot like chaos, but in fact it’s a bit more like experimental Chemistry. Once you try out a combination, you get a feel for what the flours will do for you.
So, grab yourself a test tube (mixing bowl), a couple simple reagents (we shouldn’t try for nuclear-pharmacology right off), and try substituting your own Gluten free flour in a recipe. It’ll be fun!
Oh yeah, and don’t be afraid to throw out any really terrible results. After all, good Chemists know the difference between an experiment and a lab accident (unless it’s Cold Fusion…)
1. There is some discussion as to whether Burdock will stay in the family, but it’s pretty closely related one way or another.