The very popular Mexican Mulato Chile looks like the ancho [poblano], but is darker and sweeter. The very dark, chocolate-black colored Mulato chile is left to ripen on the vine before being dried. Fairly mild, with an earthy flavor, with undertones of licorice, cherry and tobacco.
The Mulato chile is more flavorful than hot, with a heat rating of 2,500 - 3,000 Scoville Units. Along with Ancho and Pasilla chiles, the Mulato Chile is one of the three main ingredients [the Mexican national culinary triumvirate] found in mole, the ubiquitous Mexican sauce.
Use Mulato chiles alone to add rich flavor to dishes with only moderate heat, or in concert with Pasilla and Ancho chilies for a more complex taste. Great spice to use with roasted pork or chicken dishes.