This style of burger has become extremely popular lately, with more locations selling smash burgers across the country. At Smashburger, the Colorado-based burger chain, there's also no frozen beef.

Frozen burgers are a lifesaver for impromptu backyard ... They had a comeback in 2007 with the opening of the Smashburger restaurant chain and have stayed in the spotlight for several reasons.

As a result, the oft-viral smashburger ... Burgers restricts the managers’ use of assets. The headlines on a previous version of this story indicated the businesses’ assets were frozen.