Anonymous wrote:I use a sieve. I'm not sure how necessary it is to rinse it.
It's necessary because of the saponins (soap like) that coat the seed. No rinsing = bad smell and taste.
Some boxed products come pre-rinsed.
OP, I usually just rinse in my glass measuring cup. Swish around, let it settle, pour off the water a few times. I lose some quinoa sometimes, but generally it's fast and easy this way.