A history of Italy's Jews, corso espresso

David Rosenberg-Wohl gazed at the double latte he'd ordered in a cafe just north of the UC Berkeley campus.

"Do you realize this cup of coffee comes to us by way of the Jews of Italy?" he asked. "In 1632."

He should know. Rosenberg-Wohl is the curator of an exhibition at the Museo ItaloAmericano in San Francisco titled "Il Ghetto: Forging Italian...