Dr Pepper–Braised Pot Roast

Name: Dr Pepper–Braised Pot Roast
Ingredients: 2 tablespoons canola oil; 1 (3-pound) boneless chuck roast, patted dry; 1 tablespoon kosher salt; 1 teaspoon black pepper; 1 (20-ounce) bottle Dr Pepper; 1/2 cup ketchup; 1/4 cup Worcestershire sauce; 5 large garlic cloves, thinly sliced (about 1/4 cup); 2 tablespoons white vinegar; 1 teaspoon dry mustard; 1/2 teaspoon ground ginger; 1/8 teaspoon ground cloves; 1/8 teaspoon ground nutmeg; 1 pound carrots, peeled and sliced crosswise into 3-inch pieces; 2 small fennel bulbs, cut into 1-inch-thick wedges (about 2 cups); 3 tablespoons cornstarch; Mashed potatoes, for serving; Chopped fresh flat-leaf parsley, for garnish