Saffron Vegetable Soup with Quinoa

extra virgin olive oil

large carrot, chopped into 1/2" pieces

large celery stalk, chopped into 1/2" pieces

large leek, white and light green parts only, halved, washed, and sliced*

garlic, minced

large zucchini, chopped into 1/2" pieces

fresh green beans, trimmed and chopped into 1" pieces*

vegetable stock*

large pinches saffron, or one capsule

chickpeas and liquid (do not rinse!)

quinoa, rinsed

large tomato, seeded and chopped into 1" pieces

salt and freshly ground pepper,

freshly chopped basil, for serving