I've messed up quinoa so many times and know how tricky it is to prepare. Over time, I've learned that the key to fluffy quinoa is using double the amount of water as quinoa. Then, cook uncovered until all the water has been absorbed. Depending on how much quinoa you used, the cooking time will vary. After the water is absorbed, take the quinoa off the heat, put a lid on the pot, and let it steam for a few minutes. The finished product will be a perfectly fluffy grain!