It's May, and summer is nearly here, which can mean only one thing: National Burger Month is officially back. But while you've been planning your next summer adventure, Shake Shack has quietly rolled out a lineup of weekly freebies you won't want to miss.

There's nothing quite like a greasy burger sporting a sizzling smash patty, melted cheese, and tangy sauce. It's this combination that makes Shake Shack a quintessential burger restaurant, complete with plenty of flavorful options that tout this exact makeup.