What does your favorite burger come with? Fries? Onion rings? Maybe a side of exclusivity? Limited-availability, off-menu burgers aren’t new to NYC—the trend has been gathering steam for years, and it’s one that plenty of people have commented on. But we set out to actually try them all. Given that the burgers on this guide have highly specific rules (basically, the opposite of a no-fuss burger), getting our hands on them wasn’t easy. After jumping through hoops for those early reservations and last available bar-seats, we have a definite ranking of 15 elusive burgers. So now you know just how much energy to expend (or not) on acquiring one.