Rinse the red quinoa thoroughly and soak it in water for 10 minutes.
Finely chop the onion, carrot, celery, and garlic.
Heat olive oil in a pot and sauté the garlic and onion.
Add the carrot and celery and sauté together.
Add the soaked red quinoa and stir-fry briefly.
Pour in vegetable broth and add salt, then bring to a boil.
Simmer over medium-low heat for 10–15 minutes.
Finish with freshly ground pepper to taste.