Rinse the quinoa thoroughly under cold water using a fine-mesh strainer. In a small pot, bring the water to a boil and add the vegetable broth powder. Stir until dissolved, then add the rinsed quinoa. Reduce heat to low, cover, and simmer for 15-18 minutes until all the liquid is absorbed and the quinoa is fluffy. Remove from heat, fluff with a fork, and let it cool to room temperature.