Trim all visible fat and silver skin from the beef cheeks using a sharp knife
Rub beef cheeks lightly with olive oil to help the seasoning stick
Combine black pepper, salt, garlic granules, cumin, and thyme, then coat cheeks evenly
Preheat smoker to 250°F using cherry or oak wood chips for enhanced smoke flavor
Place seasoned beef cheeks directly on the smoker grates and cook for 2–3 hours
Once a mahogany bark forms and internal temp reaches 170°F, transfer to a foil tray
Pour ginger beer into the tray (covering ⅓ of the meat), then sprinkle brown sugar on top
Cover tray with foil and return to smoker for another 2–3 hours or until probe-tender at 203–210°F
Remove from heat and rest cheeks for 20 minutes, then shred the meat in its braising liquid
Assemble tacos with tortillas, pulled beef cheeks, onion, cilantro, cheese, and salsa
Serve with lime wedges and optional sliced jalapeños or pickled onions