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Dinner · Part 2 of 3: Instructions

Slow-Cooker Al Pastor Pork Shoulder for Easy Taco Nights Step-by-step instructions

A red stoneware slow cooker filled with shredded Al Pastor pork, pineapple, and onions.
Prep
Cook
Total
Serves
8
Includes 10 min resting

Before you start

Before beginning, ensure that your slow cooker is clean and positioned on a stable, heat-resistant surface. Prepare the pork shoulder by trimming any excess large fat caps if preferred, though leaving some fat is beneficial for moisture.

If you are preparing your own marinade, ensure all components are blended into a smooth, consistent sauce. Have your pineapple rings and white onion sliced and ready. Clear your workspace to allow for easy assembly, as this is a dump-and-go recipe that requires very little active time once the prep is finished.

Ingredients at a glance (7)
  • 4 lb boneless pork shoulder
  • 1 1/2 cups guajillo chili-achiote marinade
  • 2 cups fresh golden pineapple rings
  • 1 unit white onion, sliced
  • for serving, corn tortillas
  • for serving, salsa verde
  • for serving, chopped cilantro

Instructions

Preparation and Layering

  1. Assemble the slow cooker
    Place the 4-pound boneless pork shoulder into the ceramic insert of the slow cooker. Pour the 1 1/2 cups of guajillo chili-achiote marinade evenly over the meat, ensuring it is well coated. Layer the 2 cups of fresh golden pineapple rings and the sliced white onion on top of the pork to infuse the flavors throughout the cooking process.
    Look for The pork is fully submerged or coated in the marinade with pineapple and onions layered uniformly on top.
    Tip Ensure the pineapple is placed directly on the pork so the juices can tenderize the meat while cooking.

The pork is properly placed in the base of the slow cooker, and the marinade is poured evenly over the top. The pineapple rings and onion slices are arranged neatly over the meat, creating a cohesive base for the slow-cooking process. Everything looks organized and ready for the long, low-heat transformation that will follow.

Slow Cooking and Basting

  1. Slow cook the pork
    Cover the slow cooker with the lid. Set the device to cook on the LOW setting for 7 hours. Throughout the cooking time, the pork will become extremely tender and begin to collapse. During the final hour, gently baste the meat with the sweet and spicy caramelized pineapple juices that gather around the rim of the stoneware insert. Ensure the pork reaches an internal temperature of 145°F (63°C) and let the meat rest for at least 3 minutes before shredding.
    Look for The pork is easily shredded with tongs and has reached an internal temperature of 145°F (63°C).
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Avoid opening the lid frequently, as this releases heat and moisture, which are essential for the slow-cooking process.

The house is filled with a rich, smoky aroma as the pork simmers. The liquid in the slow cooker has turned into a deep, vibrant red, and the pineapple chunks have softened significantly.

During the final hour, the basting liquid appears slightly thicker and more caramelized around the edges of the stoneware insert, indicating that the flavors are concentrating properly.

Shredding and Final Assembly

  1. Shred and serve
    Once the cooking cycle is complete, use wooden tongs to shred the pork directly inside the slow cooker until it forms succulent red strands. Serve the shredded Al Pastor pork on warm double-layered corn tortillas, topping each taco with the roasted pineapple chunks, a drizzle of salsa verde, and a generous sprinkle of fresh chopped cilantro.
    Look for The meat is fully shredded, moist, and the tortillas are warm and ready for assembly.
    Tip For the best texture, ensure the pork is shredded while still warm so it absorbs the remaining juices.

The pork is easily pulled apart with wooden tongs, revealing tender, juicy strands of meat that are fully coated in the reduced sauce. The colors are vibrant, and the smell is savory with a hint of sweetness from the pineapple. The pork is ready to be plated onto warm tortillas and garnished with the fresh salsa and cilantro.

Common mistakes

A common mistake is failing to allow the pork to rest after cooking. Resting is crucial as it lets the juices redistribute throughout the meat, keeping it moist. Another error is over-shredding the meat; you want distinct, succulent strands rather than a mushy paste.

Avoid using a high heat setting, as this can toughen the proteins before they have a chance to break down. Lastly, do not skip the basting step in the final hour, as this is when the sugars in the pineapple and marinade caramelize to create that signature Al Pastor flavor.

How to tell it’s done

The pork is done when it is fork-tender and pulls apart easily into soft strands with minimal resistance. Use a meat thermometer to verify that the internal temperature has reached at least 145°F (63°C) in the thickest part of the roast.

The sauce should be thickened, slightly caramelized, and have a deep reddish hue from the achiote and guajillo chiles. The pineapple chunks should be soft and translucent, having released their sweet juices into the surrounding meat and marinade mixture.

  • Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest

Coming up in Part 3: common questions

  • Can this recipe be made with a different cut of meat?
  • Is it necessary to rinse the pork before cooking?
  • How can the sauce be thickened if it is too runny?

Also in Part 3: variations (Spicy Al Pastor, Al Pastor Bowls), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)