Fast food is being revolutionized with the brand new Turkey Jack™ from Jack in the Box®. This tender turkey burger features Swiss cheese, red onions and lettuce, topped with Jack's own mayo-onion sauce all on a sesame seed bun. view recipe "Turkey offers a fresh flavor that appeals to guests looking for something new and different. The new Turkey Jack™ at Jack in the Box® satisfies those guests who are craving a delicious, flavorful alternative to hamburgers and chicken sandwiches." Tammy Bailey, Director of Menu Marketing and Promotions, Jack in the Box ® restaurants.