This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

Bill and Wendy celebrate National Hamburger Day with author and columnist Christopher Carosa whose book “Hamburger Dreams: How Classic Crime Solving Techniques Helped Crack The Case of America’s Greatest Culinary Mystery,” investigates the hotly debated origin of the classic hamburger. Carosa also talks about vegan burgers, dissolves common misconceptions about burger history, and answers some listener questions.

You can find Bill and Wendy on Twitter,  Facebook, and Instagram. The Bill and Wendy Show airs Monday through Friday from 10 a.m. to noon, then streaming on WGN Extra from noon to 1 p.m.