Place Cilantro, Garlic, Salt in Mortar & Pestle. (*If you don't have a Mortar and Pestle use a medium size mixing bowl.) Grind together until garlic and salt mix well into cilantro almost like a paste. .
Add avocado cubes and onions to the cilantro mixture, blending together by folding over with your hands.(*If a creamier consistency is desired, smash some of the avocados while blending).
Add Ancho, Cayenne and Paprika; again folding over to mix seasonings well.
Add Mango and mix once more. Top with additional seasonings (if desi.