For the lentil salad, first wash the lentils and mung beans in plenty of cold water, strain through a sieve, rinse well again and drain.
Then boil in unsalted water, together with 1 small red dried chili pepper for about 20 – 25 minutes. Then strain the lentils and mung beans, drain and remove the chili pepper.
In a salad bowl, prepare a spicy salad dressing from the above ingredients for the salad dressing to personal taste, using a generous amount of salt, as the lentils will swallow some of it.
Add cooked lentils and beans and mix well with salad marinade. Peel and dice onion, add. Cut the tomatoes into cubes and add to the salad.
Then let the salad marinade for at least 1 hour, or overnight.
Before serving, season the lentil salad again with vinegar and possibly spices and mix with plenty of finely chopped cilantro.