Use the leftovers, if there are any, for filling summer vegetables, such as tomatoes, peppers, and squash. Add a little crumbled queso fresco or feta to the top and bake. Adapted from Deborah Madison's Vegetarian Cooking for Everyone cookbook.
Simmer the stock with the celery, onion, garlic, parsley, oregano, and 2 tbls. of the cilantro until the celery is tender, about 5 minutes. Puree in a blender or food processor and return it to the pan. Season to taste with salt.
Heat the oil in a 2 quart saucepan over medium heat. Add the rice and cook, stirring constantly, for a few minutes, until clear and pale gold. Add the warm stock and bring to a boil. Cover and cook over low heat for 20-25 minutes(if using white rice, let cook 15 minutes). Let stand for 5-10 minutes.
Meanwhile, peel, seed, and chop the chiles. Add them to the pan along with the remaining cilantro and the mint. Gently fluff them into the rice with a fork.
Variation with Peas:.
Add 1 cup fresh or frozen peas while the rice is standing. The heat of the rice should cook the peas.