Lamb Barbacoa Tacos

By Ben · cooked up in Sprig

The dried chile sauce — built from toasted guajillo, ancho, and chipotle chiles bloomed in dark beer and beef stock — fills the kitchen with a deep, almost chocolatey smoke that clings to everything for hours. The lamb shoulder goes in covered and comes out completely surrendered, falling into rough, juicy shreds at the touch of a fork, every fiber soaked through with cumin, cinnamon, and that slow-built chile heat. Quick-pickled red onions cut right through the richness with a sharp, bright pop that makes each bite feel alive. This is the kind of meal you make on a Saturday when you have time to let the oven do the heavy lifting, and people talk about it for weeks afterward.

Ingredients

• 3.5 pounds bone-in lamb shoulder, trimmed of excess fat
• 2 teaspoons kosher salt, plus more for seasoning
• 1 teaspoon freshly cracked black pepper
• 2 tablespoons neutral oil (such as avocado or vegetable oil)
• 1 cup dark beer (such as Negra Modelo or stout)
• 2 cups beef stock, low-sodium

• 4 dried guajillo chiles, stems and seeds removed
• 2 dried ancho chiles, stems and seeds removed
• 2 chipotle chiles in adobo, plus 1 tablespoon adobo sauce
• 1 medium white onion, roughly chopped
• 6 garlic cloves, smashed and peeled
• 2 tablespoons apple cider vinegar
• 2 teaspoons ground cumin
• 1 teaspoon dried Mexican oregano
• 1/4 teaspoon ground cloves
• 1/2 teaspoon ground cinnamon
• 1 teaspoon kosher salt

• 1 large red onion, thinly sliced into rings
• 1/2 cup apple cider vinegar
• 1/2 cup water
• 1 tablespoon granulated sugar
• 1 teaspoon kosher salt
• 1/2 teaspoon dried oregano
• 18 small corn tortillas, warmed
• 1 large bunch fresh cilantro, leaves and tender stems only
• 3 limes, cut into wedges
• Flaky sea salt, for finishing

Instructions

1. Make the pickled onions first so they have time to cure: Combine apple cider vinegar, water, sugar, salt, and dried oregano in a small saucepan over medium heat. Stir until sugar and salt dissolve, about 2 minutes — do not boil. Place thinly sliced red onion rings in a clean glass jar or heatproof bowl, pour the hot brine over them, press the onions down to submerge, and let cool to room temperature. Cover and refrigerate for at least 1 hour; they will turn a vivid magenta and soften slightly while retaining a firm bite.
2. Toast the dried guajillo and ancho chiles: Heat a dry cast-iron or heavy skillet over medium-high heat until very hot. Working in batches, press each chile flat against the surface for 15–20 seconds per side until they blister, release a fragrant smoke, and just begin to darken — do not let them blacken or they will turn bitter. Transfer toasted chiles immediately to a heatproof bowl and cover with 2 cups of very hot (just off the boil) water. Weigh them down with a small plate and soak for 20–25 minutes until completely pliable and softened.
3. Drain and discard the soaking liquid (it can be bitter). Transfer the rehydrated guajillo and ancho chiles to a high-powered blender. Add the chipotle chiles plus their adobo sauce, roughly chopped white onion, smashed garlic, apple cider vinegar, ground cumin, Mexican oregano, ground cloves, ground cinnamon, and salt. Add 1/2 cup of the beef stock to help the blender move. Blend on high for 60–90 seconds until completely smooth and deeply fragrant. Pass the sauce through a fine-mesh strainer, pressing firmly with a spatula to extract every drop; discard the solids. Taste and adjust salt.

1. Preheat your oven to 300°F with a rack positioned in the lower third. Pat the lamb shoulder completely dry with paper towels — surface moisture is the enemy of a proper sear. Season generously on all sides with kosher salt and freshly cracked black pepper. Heat neutral oil in a large Dutch oven over high heat until shimmering and nearly smoking. Sear the lamb shoulder undisturbed for 4–5 minutes per side, including the fat cap and any exposed bone edge, until a deep mahogany crust has formed on every surface. Remove the lamb and set aside on a plate; reduce heat to medium.
2. Pour the dark beer into the hot Dutch oven and use a wooden spoon to scrape up all the caramelized fond from the bottom — that layer is pure flavor. Pour in the remaining beef stock and all of the strained chile sauce, stirring to combine. Nestle the seared lamb shoulder back into the braising liquid; it should be submerged about halfway. The liquid should come about two-thirds up the sides of the meat. Bring to a gentle simmer over medium heat, then cover tightly with the lid (or a double layer of foil pressed under the lid for a tighter seal).
3. Transfer the covered Dutch oven to the 300°F oven and braise for 3.5 to 4 hours, turning the lamb once at the halfway mark. The lamb is done when it yields effortlessly to a fork and the meat pulls away from the bone with zero resistance — the internal temperature should read 195–205°F, well past safe temperature into full collagen breakdown. Remove the Dutch oven and let the lamb rest, uncovered, for 20 minutes in the braising liquid.
4. Lift the lamb shoulder onto a cutting board and use two forks — or your hands once cool enough to handle — to pull the meat into rough, irregular shreds. Discard any large pieces of fat or bone. Skim excess fat from the surface of the braising liquid using a ladle or fat separator. Return the shredded lamb to the Dutch oven and toss vigorously with the reduced braising sauce until every strand is deeply coated and glossy. Taste and adjust seasoning with salt and a small squeeze of fresh lime. The mixture should be intensely savory, smoky, and just slightly acidic.

1. Warm corn tortillas using the traditional method: Place them directly on the open flame of a gas burner set to medium-low, turning with tongs every 20–30 seconds until lightly charred in spots and pliable. Alternatively, wrap stacks of 6 in damp paper towels and microwave for 45 seconds, or heat directly in a dry cast-iron skillet over medium-high heat for 30 seconds per side. Keep warm wrapped in a clean kitchen towel or in a covered tortilla warmer.
2. To plate restaurant-style: Double up two warm tortillas for structural integrity. Spoon a generous mound of braised lamb — about 2 heaping tablespoons — slightly off-center on the tortillas. Arrange a small tangle of the vibrant magenta pickled red onions alongside the meat. Scatter a generous pinch of fresh cilantro leaves over the top. Finish with a small pinch of flaky sea salt over the meat for textural contrast. Arrange 3 tacos per plate in a slight fan, with 1–2 lime wedges tucked alongside. Drizzle a small spoonful of the remaining braising liquid directly over the meat just before serving — that final glossy hit of sauce is what ties every element together.

Chef's tips

Nutrition (per serving, estimated)

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