1 (5 1/2-pound) whole Long Island duck
6 cups water
1 cup light soy sauce, divided
1/3 cup honey, plus 1/4 cup
1 (3/4-ounce) can green peppercorns in brine, about 2 tablespoons
1/4 cup champagne vinegar
2 tablespoons dry Marsala
Reserve any fat that accumulated at the bottom of the pan. I use that duck fat like oil or butter for cooking. It's delicious!