Ancho Sauce
Just North of the Border - David DeWitt and Nancy Gerlach
2 ancho chiles, stems and seeds removed, chopped
1 small onion, chopped
1 tablespoon vegetable oil
2 small tomatoes, peeled and chopped
1/4 cup raisins
2 cups chicken broth
Saute chiles and onion in vegetable oil until soft. Add the tomatoes, raisins, and broth and simmer 10 more minutes. Puree in a blender until smooth.