Wash and soak the lentils for at least have an hour in warm water.
Drain, wash and add the lentil, salt, peper and 1.5 cups water in 3 QT.
Cook covered on medium heat. Reduce heat to medium-low once the water comes to a rapid boil. Check for doneness after 30 minues.
Cook uncovered until lentils are tender and the water is almost all gone. ( 4-5 minutes ).
Add the sauce to the lentils, bring to a boil at medium and simmer for 4 minutes on low-medium. done. Should be a thicker consistency.
Taste and adjust spice if needed.
Load up Romaine Hearts with the lentils, chopped mango, and cilantro serve.