Not all flours are "fake". It's the fat that deteriorates in flour, which is why wheat flour and oats go rancid. Technically, coconut flour would have a shorter shelf life than something like potato starch or white rice flour, which is basically fat free. Nut meals are the worst offenders of all.
Originally Posted by touchdowntodd
You could always just throw white rice in a coffee grinder. That's how white rice flour is made. If you're against buying flour, grinding white rice yourself at your leisure is absolutely your best option. Another possibility is to slice potatoes very thinly and put them into a food dehydrator into "chips" and then grind that into potato starch.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.