In a saucepan, the onion and oil will boil over medium heat, add a tablespoon of flour when the onions are pinkish, and stir it up a bit. We'll add the carrot that we extracted and washed, and the little slice we chopped. We cook until the lentils and carrots are softened and crushed. When it is cooked, it is filtered and put in a pot and boil again. We'll add his manners 15 minutes before serving.