Henry of Trastámara, of Henry of Castile, the Fratricidal, was not as friendly with the Jews of Spain as his half-brother, Pedro the Cruel, or Pedro the Just (depending on your interpretation of him) had been. He's "The Fratricidal," by the way, because he murdered his half-brother Pedro the Cruel or Just.  Henry wasn't yet king in 1355 -- that is, he hadn't murdered his half-brother yet -- but was at war with him, and wherever Henry took some power, Jews were murdered.  The massacre at Toledo was the beginning of his crimes against the Jews; Toledo was important as a center of Jewish intellectual and religious life in Spain. So we explain this, and the background, of course. And Michelle found a recipe for medieval Challah. So there's that.