01 - Pat beef cheeks dry with paper towels and season thoroughly with salt and pepper on all sides.
02 - Heat vegetable oil in a Dutch oven over medium-high heat. Sear beef cheeks until deeply browned on all sides, approximately 3–4 minutes per side. Remove from pot and set aside.
03 - In the same pot, add diced onion and sauté for 5 minutes until translucent and softened. Add minced garlic and cook for 1 minute until fragrant.
04 - Stir in chopped chipotle peppers, tomato paste, ground cumin, smoked paprika, and dried oregano. Cook for 1–2 minutes, stirring constantly to toast the spices and release their flavors.
05 - Return seared beef cheeks to the pot. Pour in beef broth, fresh lime juice, and add bay leaf. Bring mixture to a simmer, then cover tightly and reduce heat to low.
06 - Braise covered for 3–3.5 hours, or until beef cheeks are fork-tender and easily shredded with minimal resistance.
07 - Remove beef cheeks from cooking liquid. Shred meat using two forks, discarding any excess fat or connective tissue. Moisten shredded beef with 2–3 spoonfuls of the braising liquid.
08 - Heat corn tortillas in a dry skillet over medium-high heat for 20–30 seconds per side, or warm directly over an open gas flame until pliable and lightly charred.
09 - Fill warm tortillas with shredded beef. Top generously with finely diced white onion, fresh cilantro, salsa verde, and serve with lime wedges for squeezing.