New York (CNN Business) Burger King is trying to get customers' attention with something a little different: Tacos.

The burger chain started selling crunchy tacos on Tuesday. They cost $1 in most places, but are more expensive in Alaska and Hawaii, and will only be available for a limited time.

Burger King first tested out tacos in western states. "We've seen success with tacos in those restaurants and knew it was time to bring this west coast favorite nationwide," Chris Finazzo, president of North America for Burger King, said in a statement. The new item adds "variety" to Burger King's snack offerings, he added.

Fast food chains use limited-time offerings to build hype and keep their brands top of mind with consumers. And tacos in particular are a good way to attract customers, said Neil Saunders, managing director of GlobalData Retail, a research and consulting firm.

Burger King is selling tacos for a limited time.

"Tacos remain very popular with consumers," Saunders said, adding that fast food companies that wouldn't traditionally sell tacos may be "keen to get a slice of that action."

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