Put the rinsed quinoa, salt and water into a pot and bring it to a boil. Cover and simmer gently until the quinoa absorbs all the water, about 10-15 minutes. Remove from heat and let sit for 5 minutes. Place into a large bowl and fluff up with a fork to help it cool more quickly.
2
While the quinoa is cooking, prepare the rest of the salad. Soak the red onions in the lime juice and set aside. Soaking the onions in lime juice helps take the edge off of them. Mix the prepped black beans, corn kernels, tomatoes, cheese, jalapeños, cilantro and oil in a large bowl.
3
When the quinoa has cooled, mix it into the bean mixture. Add the red onion and lime juice and add salt, more oil or lime juice to taste. Serve at room temperature.
