04/05/2018 · Ancho Chile Pepper. Ancho chile peppers are the dried form of poblano are typically low in heat, with a sweet and smoky, raisinlike flavor. SHU: 1,0002,000 (mild) Substitutions for Ancho Chile Peppers: These are one of the more common chile peppers, making them pretty easy to find. However, you can substitute mulato or guajillo chile .