Rinse the quinoa in a fine sieve under cold running water to get rid of its bitter flavors. Drain well, and put it in a saucepan. Add the vegetable stock to the washed quinoa and cook. It is best to simmer for 10 minutes and then let it absorb for 5 minutes. Stir well, so the quinoa does not settle to the bottom or even burn. Season with salt or pepper to give the quinoa a bit more taste. At the end, add some olive oil, stir well and put aside. Cover the pot with a lid to keep the quinoa nice and warm.