This IS NOT an authentic Al Pastor recipe. Let me repeat that; "This is not an authentic Al Pastor recipe." This is one of those recipes I tried on my family the authentic way and they decided it needed some changes to meet their tastes. Hey, it happens. That's why we try new things. This recipe starts out with some charred garlic and poblano peppers and then takes on some of the more traditional ingredients.
Roast the garlic cloves and poblano pepper over high heat in a cast iron skillet. Turn the garlic and pepper once they get black skin on the side facing the heat source
Once the garlic and pepper are soft to the touch, remove from the skillet, place in a bowl, and cover with a damp paper towel; set aside
Heat about 4 cups of water in either a microwave-safe dish or in a stock pot to nearly boiling
While the water is heating, remove the stem and seeds from the guajillo peppers
Submerge the dried guajillo peppers in the hot water for 15 minutes (you may need to put a small plate on top of the peppers to keep them submerged)
While the guajillo peppers are rehydrating, peel the garlic and remove the charred areas of the poblano pepper
Remove the stem and seeds from the poblano pepper, cut the pepper into quarters
Remove the stem from the chipotle peppers
Place the poblano pepper, garlic, onions, chipotle peppers, achiote paste, OJ, pineapple juice, oregano, cumin, paprika, salt, pepper, and cinnamon in a blender
Remove the guajillo peppers from the water, let most of the water drain off of the pepper and then place in the blender
Blend the mixture on high until it is smooth and there are no chunks visible
Place the pork slices in a large bowl, pour the marinade over the pork and mix well (make sure all of the pork slices are well covered with the marinade)
Cover and place in the refrigerator for at least overnight and up to three days (we have found longer is better)
Cooking Al Pastor
Remove all but one rack from the oven
Place the one remaining rack on the lowest setting (you will need at least 13 inches of clearance)
Preheat oven or grill to 350℉
Peel and slice the pineapple into 1-inch thick slices; place one slice of pineapple on the bottom of a Brazilian vertical skewer
Place the slices of pork on the skewer, one at a time until there are no slices left. Leave enough room at the top of the skewer for the second pineapple slice
Place the second pineapple slice on the top of the skewer
Place the Brazilian skewer on a baking sheet with sides to capture any fluids from the marinade during the roasting process
Cook the Al Pastor until the temperature reaches between 180 and 190℉. This will give you tender meat that is not so tender it will shred when you slice it
Let the Al Pastor rest for about 10 minutes
Using a very sharp knife or an electric knife, slice the pork while still on the skewer. Start at the top and slice a thin layer all the way down each side. It is best to turn the skewer after each cut so you don't end up with a leaning tower of meat
Place the meat on a serving plate
Cut the two pineapple slices into small bits for serving on the tacos
Taco Assembly
Place the Al Pastor meat on a heated corn tortilla with onion, cilantro, and pineapple chunks. That's it! The complex flavors of the meat do not anything else. It's good stuff!