Recipes › Lunch / Dinner › Southwest Quinoa Salad with chipotle vinaigrette Lunch / Dinner Beets, black beans, and bell pepper gather together in this Southwestern salad sprinkled with quinoa. Nutritious sweet potatoes and arugula get into the mix, but it’s the chipotle vinaigrette that really sings with flavor. Quinoa is an ancient food native to the Andes mountains of South America. Although quinoa cooks like a grain, it’s technically the fruit of an herb plant.