This marmalade pairs onions and Zinfandel—a perfect match for a burger. The recipe, from Michael Chiarello’s book, Live Fire, is one to keep in your back pocket this summer. “You can freeze the marmalade, which makes it a great way to use leftover wine the day after a party,” Chiarello notes. “Store the marmalade in an airtight container in your freezer for up to 1 month.”