To go straight to the recipe, click on this link: Chile de Arbol Salsa. The picture above compares the chile de arbol on the right with the traditional New Mexico red chile on the left. The chile de arbol is grown throughout Mexico and used in many Mexican dishes. If you use a lot of chile you probably already know that it’s the small peppers you need to be careful of and that is SO very true for this little pepper. On the Scoville scale, the chile de arbol falls between 15,000 to 30,000 units.