Gilbert’s 17th Street Grill is bringing back an old favorite specialty Burger that you’ll be able to order again starting Monday October 3rd. End date? I would suppose that depends on how popular it is. If this is the first time you lay your eyes on this dude then behold its greatness. The Havarti Burger is an 8oz. Certified Angus Beef Burger with Bacon and Havarti Cheese between two English Muffins toasted with Garlic Butter. That melted cheese still drives me crazy.