Will report back my results after about a day or so. Preparing ingredients for an AG GF batch I will be making soon and testing how malting will go on a small scale. Only thing I am seriously worried about not malting at all is the black quinoa as I'm guessing it has already been roasted but figured what the hell.
I think you must be hiding in my kitchen. I did these same four grains (white quinoa and hulled millet) and recently and will be (trying to, anyhow) brewing with them this week. It's my first all-grain brew as well as my first gluten-free brew. Eek!
I had success with everything but the millet--it simply didn't sprout. Not sure if I'm even going to bother with it in the brew or not.