Here is a summary of the most interesting QSR news stories of the week from around the world.

Wendy’sis the latest chain in the to explore plant-based alternatives. As reported by CNBC, the burger chain is currently testing black bean burgers, which could be launched next year if it goes well. Read morehere.

Newer and healthier chains are still fighting to break through traditional fast food’s hold on lunchtime habits in the US, according to new research from investment researcher Piper Jaffray. As Forbes reports, the data revealed that teens’ most-preferred restaurant brands were Chick-fil-A, Starbucks and Chipotle, all chains that are over two decades old. Read morehere.

Increased consumption of fast food leads to further exposure to a toxic chemical called PFAS, used as a barrier to some forms of packaging. National Geographic cited a study that revealed that those who had eaten fast food consistently showed an increase in the amount of PFAS in their blood. Read morehere.

Cracker Barrelannounced that it has acquired 33-unit Maple Street Biscuit Co. for $36m in an all-cash deal. Restaurant Business reports that the move will result in the company fold its 3-year-old Holler & Dash brand into the newly acquired fast-casual chain. Read morehere.

Subwayhas named its new chief marketing officer as it continues its ongoing leadership overhaul. As reported by Restaurant Business, Carrie Walsh is a former CMO for Pizza Hut and most recently worked with arts and crafts retailer Michaels Stores. Read morehere.