Add the rehydrated ancho
chili peppers, broth, tomato sauce, vinegar, brown sugar, and cumin. Bring
to a boil and then reduce heat and simmer for 15-20 minutes.
Use an immersion blender or
transfer to a blender and puree the mixture until smooth.
Return the sauce to the
saucepan and season with salt and pepper to taste. Simmer for another 5-10
minutes or until the desired consistency is reached.
Serve the ancho chili sauce
warm over tacos, enchiladas, or any Mexican dish. Store in an airtight
container in the refrigerator for up to 2 weeks.