Pork loin marinated and braised in a fragrant adobo of dried chiles and aromatic spices. High in protein and full of deep flavor, this dish makes an impressive family dinner centerpiece.
Toast guajillo and ancho chiles in a dry skillet over medium heat for 1-2 minutes per side until fragrant, being careful not to burn.
Remove stems and seeds from chiles, then soak them in 1 cup of hot water for 20 minutes until soft.
Blend soaked chiles with soaking water, onion, garlic, apple cider vinegar, cinnamon stick, cumin, oregano, black peppercorns, and salt until smooth.
Rub the chile adobo marinade thoroughly over pork loin, cover, and refrigerate for at least 2 hours (ideally overnight) to allow deep flavor penetration.
Preheat oven to 325°F. Transfer marinated pork and all marinade to a Dutch oven, cover, and braise for 1 hour; then uncover and continue cooking for 30-45 minutes, basting occasionally, until the pork is tender and the sauce is thickened.
Remove pork from oven, let rest 10 minutes, then slice and serve with the adobo sauce.