Invention Playlist 3: Ketchup

You love it. You put it on everything. But where does ketchup come from? In this episode of Invention, Robert and Joe explore the mysterious origins of everyone’s favorite sweet red sauce -- and consider the jaw-dropping fact that ketchup isn’t always red and isn’t always made from tomatoes. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.