Speakeasy

A speakeasy was an establishment that illegally served alcoholic beverages. Such establishments flourished during the Prohibition era in the United States (which lasted from 1920 to 1933, although some states enforced prohibition longer), when selling, making, and transporting alcoholic beverages was against the law.

The American wizarding government apparently enforced prohibition at the same time. In 1926, there was at least one magical speakeasy in New York, which was located in the neighbourhood of Harlem and run by a goblin gangster. Newt Scamander went to this establishment when he was looking for information.