Place the cooked black beans and their cooking broth in a blender along with the sauce from the chipotles in adobo and the chipotle chile if using. Place in a medium saucepan, heat over medium-low heat, stirring occasionally, until very hot. Reduce the heat to the lowest possible setting and keep warm. The puree should have the consistency of heavy cream.

Heat a large skillet over medium heat. Once it is hot, add chorizo, and cook, crumbling as it cooks with a wooden spoon or spatula, until it has browned and crisped, about 5 to 6 minutes, scrape into a bowl, cover and set aside.

Pre-heat a comal or cast iron skillet over medium heat.

Heat the corn tortillas, a pair at a time, in the pre heated comal or skillet, about 30 seconds to 1 minute per side, you want them to be completely heated and even slightly toasted.(Alternatively, the tortillas can be quickly “passed through hot oil”, that is quickly fried, 10 seconds per side, over pre heated oil in a medium skillet over medium heat, then drained). One by one, dip a tortilla in the black bean sauce, and place on a platter, folded. Continue with the remaining tortillas.

When all the tortillas are dipped and folded, pour more black bean sauce on top. Cover with the cooked chorizo and avocado. Drizzle with Mexican cream.