Brown Sugar and Soy Glazed Roast Duck - The Local Palate

Ingredients

• 2 cups plus 2 tablespoons brown sugar, divided
• 2 cups plus 1 tablespoon kosher salt, divided
• ¼ cup toasted black peppercorns
• 8 bay leaves
• Zest and juice of 4 oranges
• 2 (12-ounce) bottles amber beer
• 1 gallon ice water, plus more as needed
• 1 (2½-pound) Pekin duck (or wild mallard), cleaned
• 1 tablespoon ground black pepper
• 2 tablespoons soy sauce (not low-sodium)