This lamb barbacoa taco is made with homemade chile poblano corn tortillas that give it an extra kick of flavor.
Adapted from Mexico from the Inside Out by Enrique Olvera.
Place the oil in a small pot and heat to 375 degrees F. Fry the chile for 3 minutes, then transfer to an ice bath. Drain and remove the skin and seeds. Bring 2 cups water to a boil in a small pan and add ½ teaspoon salt. Blanch the cilantro, drain, and transfer to an ice bath. Blend the chile, cilantro, and remaining salt and strain. Mix with the dough and adjust the salt. Divide into 4 (1-ounce/25 g) portions and shape into balls. Using a tortilla press, form into tortillas. Cook on a comal over low heat, turning 3 times, for 35 seconds on each side for a total of 1 minute and 45 seconds.
Roast the bones on a baking sheet in a 355 degrees F oven for 1 hour. Core and seed the chiles and soak in 2 cups of hot water for 10 minutes, then drain and blend. In a large pot, sauté the garlic, onion, avocado leaf, and roasted bones in the oil over medium heat. Mix in the guajillo paste and cook over low heat, stirring constantly, for 5 minutes. Add 4 cups of water and cook over medium heat. Adjust the salt, strain (sieve) and cool.
Toast one side of the leaf directly over a gas burner set to medium heat. Place it in a baking dish and add the onion, garlic, avocado leaf, and lamb. Dissolve the salt in the water combine with the adobo. Pour the adobo over the lamb and over the baking dish with aluminum foil. Roast in a 475 degrees F combi oven for 40 minutes. Then reduce the oven temperature to 195 degrees F, with 65 percent humidity, and roast for 10 hours longer. Remove from the oven and cool slightly. Remove any connective tissue from the lamb and return the meat to the Chile Guajillo Adobo.
Using a blender, combine the avocado with the peas, cilantro, and chile until homogeneous. Adjust the salt. Place in a pastry bag or squeeze bottle and refrigerate.
Arrange 4 tortillas on plates and place the lamb on top. Place 3 large dollops of guacamole in a triangle on each tortilla. Place the shoots, sprouts, and flowers over the lamb. Finish with the squash blossoms.