This week, Pizza Hut launched its new Detroit-style pizza.

There’s just one problem: A lot of people have no clue what that is.

“Detroit style? I’ve never heard of it,” said Mike Zurek, 70, who has lived in Chicago nearly all his life. For him, there is only one deep-dish pizza: Chicago style. “But every place has its way of making it unique.”

Even some Detroiters are a bit puzzled. Karen Gunderson stopped by a Pizza Hut in suburban Detroit this week to pick up a stuffed-crust pie. She had seen on the news that the pizza-making chain was rolling out a Detroit-style version but wasn’t quite sure what to make of it.

“I’m not really familiar with Detroit style,” said Ms. Gunderson, 72, who grew up in the area and has lived there most of her life. She is open to trying Pizza Hut’s newest creation, and hopes it’s as good as its signature stuffed crust.