Wash quinoa changing water several times. Cook quinoa in salted water for 10 minutes. Drain in a sieve and rinse under cold water. Place sieve over a pan with boiling water. Quinoa must not touch water. Cover with a kitchen towel and lid and steam quinoa for 10 minutes.
Combine red kidney beans with balsamic vinegar and 1 teaspoon salt and pepper.
Once quinoa is cooked, remove from pan and let it cool. Add beans, red pepper, cilantro, corn, celery, lemon juice, olive oil, cumin and ají. Correct seasoning.