Slow-Roasted Pork Loin with Molasses and Balsamic Glaze - Vino Cotto

Ingredients

• 1 cup balsamic vinegar*
• 1/2 small onion, coarsely chopped
• 6 thyme sprigs
• 2 cups chicken stock, preferably homemade
• 1 cup unsulfured molasses
• 2 tablespoons powdered mustard
• 1/4 teaspoon crushed red pepper
• Two 5-bone pork loin roasts, chine bones removed (about 4 pounds each)
• Kosher salt
• 2 garlic cloves, thinly sliced
• 2 rosemary sprigs, broken into 2-inch pieces