Daniela Gutiérrez Flores, assistant professor of Spanish at UC Davis, recently appeared on KQED's "Beyond the Menu" show. 

In this episode, host Cecilia Phillips interviews the owners of El Garage in Richmond, Calif. as well as food writer Bill Esparza and Gutiérrez Flores, who specializes in early modern Spanish and colonial Latin American studies, about birria tacos — and their history — in the Bay Area and beyond.