The Incas swore by it, but then they practised human sacrifice so their preferences ought to be taken with a pinch of salt. Quinoa isn’t a grain (it's a
pseudocereal) but can be treated as such. Cook a little like rice – i.e. in simmering water, covered, for about 15 minutes. It’s handy for bulking up a salad and is packed full of just about everything healthy and righteous, so maybe the Incas got this one right.