Quinoa is sold in big bags at Costco. Our son-in-law is allergic to gluten so we use quinoa a lot. Whole Foods and Trader Jo's as well as many other stores now have whole sections of gluten free products. Plus, since I make nearly all our meals from scratch, I can ensure that no gluten sneaks in.

Hi Laura, yes, like Nan said, Costco carries it in a big bag (of course, it's Costco!). We have bought the red and black types in small quantities from whole foods but now that I am finding we can substitute it for rice so easily, am going to look online into sources for bulk purchases. That gets hard, because you have to have a place to store it, but I think it'd be a lot cheaper in a ten or twenty-five pound bag than by the pound. I've thought about doing that with oats, too, our house might start looking like a silo!

I want to put in a word about food sensitivities. I thought oats were good for me too and have been feeling virtuous (and sleepy and overfull) when eating oatmeal my whole life. Turns out I am allergic to oats (and red pepper and milkfat). Not the kind of allergic that makes you break out in hives, but the kind of allergic where you feel sort of bloated and sleepy, or phlegmy, or stomachachy. Many docs don't even know about the food sensitivity test, but an integrative medicine doc will know. Best to keep inflammation down, especially when contending with PD.