Part of my fondness for the Southwest is the fact that I love the regional cuisine. I learned to make this sauce when I was living in Tucson, and it is one of the best enchilada sauces I’ve had. And it’s so EASY to make! I love it over spinach and mushroom enchiladas, or black bean and sweet potato enchiladas, and it’s great to use in pancake-style enchilada casserole. The secret is the cocoa – don’t leave it out, it is essential!