Are hush puppies racist? Why do we celebrate weddings with a multi-tiered, super fancy, sometimes not particularly tasty, very expensive cake? Can a dairy-intolerant person actually drink a glass of A2 milk?

These three questions came from listeners. Just not our listeners. They came to Cynthia Graber and Nicola Twilley, hosts of Gastropod, a show that investigates the history and science behind the foods we eat. Our host Jonquilyn Hill called them up to ask about the show, and play an episode from their Ask Gastropod series.

Check out Gastropod.

Let us know what questions you want us to look into for future episodes of Explain It to Me: Call 1-800-618-8545, email us at askvox@vox.com, or fill out this form. Learn more about your ad choices. Visit podcastchoices.com/adchoices