Onion jam, made by slowly cooking onions until soft and caramelized, can be brightened with the addition of vinegar or other acid, or be made more complex with spices or finishing herbs. While onion jam is often seen topping burgers, it can be equally at home providing a flavor counterbalance to roasted or grilled meats, poultry, fish, or even pairing with cheese, or as an accompaniment on a charcuterie board.

Market research firm Datassential reports that onion jam is found on 1.9% of U.S. menus, up 13% over the past four years.

Click through the gallery to learn more about this Flavor of the Week and see how one restaurant is using onion jam on its menu.