Has anti-Semitism always been the same, or have ideas about Jewishness, and suspicion towards Jews, changed over time? In this episode, guest Ana Gómez-Bravo explores these questions by looking at the lives of Jews and "conversos" (Jewish converts to Christianity) in medieval Spain, explaining how Catholic authorities tried to define and restrict their Jewish and converso residents, in a conversation that spans medieval medicine, forbidden breastfeeding, decoy hams, official guides to Jewishness, and the expulsion of Jews in 1492.