Mighty Duck with Potatoes - Alton Brown

Ingredients

• 1 (12-ounce) can orange juice concentrate
• 15 whole black peppercorns
• 4 cloves garlic, smashed
• 1 bunch fresh thyme
• 1/2 cup kosher salt, plus additional for seasoning
• 1 (5 1/2- to 6-pound) frozen Long Island duck, thawed
• 1/4 cup Grade A maple syrup
• 2 teaspoons red pepper flakes
• 1 pound red bliss potatoes, quartered
• Freshly ground black pepper, to taste
• 2 shallots, minced
• 2 handfuls shredded chard
• Dash sherry or balsamic vinegar