Red-Chile Braised Pork Belly with Greens - Rick Bayless

Ingredients

• 4 1/2 pounds pork belly, cut into 4 equal portions
• 4 dried guajillo chiles, stemmed, seeded and torn into large pieces
• 3 cloves garlic, peeled
• 1 tablespoon cider vinegar
• 1 tablespoon dark brown sugar
• 1 teaspoon salt
• 1 canned chipotle chile en adobo
• 1 teaspoon dried Mexican oregano,
• 1 tablespoon vegetable or olive oil
• 2 medium bunches greens, stems removed, cut crosswise into 1/2-inch strips (about 8 cups)
• 1/4 cup chopped chives, for garnish
• A few slices white onion, for garnish