Scarcity is a reliable play in the quick-service playbook. 

A tight promotional window creates urgency that an everyday menu item rarely matches. But LTOs are not just about short-term traffic. Increasingly, brands are treating them as a deliberate testing ground—though graduating an item to the everyday menu requires clearing a high bar. 

An LTO must have a clearly defined objective before it ever enters a kitchen, says Nancy Combs, SVP of growth at Shake Shack. Some are designed as breakthrough moments to generate buzz and spark trial; others encourage trade-ups, lift check averages, or fill an underserved occasion. 

“We’ve become increasingly intentional about defining the job we want each one to do,” Combs says. 

Take The Big Shack, a deluxe double-patty twist on the classic ShackBurger that debuted for a limited run late last year and became a permanent menu fixture this spring. Built around a half-pound of Angus beef with secret sauce, it gave guests a more substantial and indulgent burger option. 

It drove immediate trial, Combs says, but sales during the promotion were only baseline data. To determine whether The Big Shack deserved an everyday spot, Shake Shack considered incremental occasions, kitchen execution, guest feedback, and whether its secret sauce could be cross-utilized. 

“One of the strongest signals for The Big Shack was what happened after the LTO ended,” Combs says. “Guests kept asking us to bring it back. In fact, it was one of our most highly requested LTOs ever.” 

Still, strong sales and sustained guest demand do not automatically mean an LTO belongs on the core menu. Your Pie saw that firsthand with its Cubano pizza—featuring an extra-virgin olive oil base topped with mozzarella, feta, pickled jalapeños, pickles, ham, bacon, Texas Pete Dust, and a Dijonnaise drizzle—which began several years ago as an LTO. The item built a devoted following, with guests continuing to ask for its return long after the promotion ended. 

The chain revived and expanded the idea earlier this year with its Cubano Craft Series, which included a pizza, Cubano sandwich, and Texas Pete Dust wings. It quickly became one of Your Pie’s strongest-ever LTOs. But it hasn’t joined the permanent lineup. 

“We don’t want to take away the magic of an LTO,” says Leah DiStefano, director of brand innovation at Your Pie. For the brand, limited-time Craft Series offerings create reasons to visit and, in some cases, anticipation for recurring favorites such as its annual summer peach promotion. 

Still, the Cubano left something behind. House-pickled jalapeños, introduced with the original pizza LTO, performed well enough to remain on the menu year-round. 

“It’s not just the overall concept,” DiStefano says. “It’s what the different ingredients can do for our menu, and how our customers and franchise owners embrace the ingredient and steer how it performs.” 

That is not a hard-and-fast rule. Your Pie made hot honey pepperoni permanent after guests and franchisees continued ordering it beyond its LTO run. 

“Whenever we look at an LTO, we want to make sure it earns its place first to be a featured LTO,” DiStefano says. “It takes a lot of effort, a lot of support to get it to that point, and then it takes that much more to earn its place on the menu.” 

At PJ’s Coffee, former LTOs were recently harnessed to reinforce the brand’s core identity. The New Orleans–born brand made six recurring seasonal offerings permanent as part of its Big Easy initiative: King Cake, Pralines and Cream, Southern Wedding Cake, Southern Pecan, Bananas Foster, and Café au Lait. 

“If we’re opening up in an expanding market in Texas or the Northeast, and people come to PJ’s for the first time—what makes us different?” says Reid Nolte, EVP of marketing. “That’s where we had the idea to take these LTOs and make them evergreen. It was about owning who we are, being from New Orleans.” 

Nolte says LTOs must capture incremental sales while also helping grow new occasions without cannibalizing core morning coffee runs. 

“People need their coffee in the morning, but they also need something indulgent or a pick-me-up in the afternoon,” he says. “It’s two different ways to consume caffeine and energy.” 

That afternoon “snack time” window has informed PJ’s tests of matcha, energy drinks, and craft sodas. But operations still dictate whether an item can survive. PJ’s iced strawberry matcha initially used a separate strawberry cold foam, but franchisee and frontline feedback showed that supporting two cold foams was too complex. The brand reworked the drink before making it permanent, moving the strawberry flavor into the matcha itself. 

Now, PJ’s is weighing three summer craft sodas against afternoon sales, product-mix expansion, and labor. 

“We’d love to make it a full-time line,” Nolte says, “but we can’t do it if it’s going to infringe on ticket times and ease of operation.” 

Fast Casual, Fast Food, Menu Innovations, Story, PJ's Coffee, Shake Shack, Your Pie