Rinse the quinoa under cold running water, using a fine-mesh strainer or colander, for about 30 seconds. Drain well (some varieties are pre-washed or pre-rinsed, but I still follow this step to reduce the bitterness).
Pour the quinoa into a medium saucepan with a lid. Add water** or vegetable broth, or a combination of both, and salt (optional). Bring to a boil over medium-high heat.
Reduce the heat to medium-low, cover with a lid, and gently simmer until all the liquid has evaporated (15 to 20 min).
Remove from the heat, and let the quinoa stand for 5 min, covered. Then remove the lid and gently fluff the quinoa with a fork.
At this point, the quinoa is ready for enjoying it as is, or use it in your favorite recipe.