The customer would lick clean the glass and return it to the vendor, who would reuse it.
[2] The penny lick was banned in London in 1898 due to concerns about the spread of disease, particularly cholera and tuberculosis, as the glass was often not washed between customers.
[3] Questions of hygiene led Italo Marchioni to introduce a pastry cup in New York City in 1896,[4] which he patented in 1903.
The waffle ice cream cone rapidly became popular soon afterwards, displacing the penny lick.
You can help Wikipedia by expanding it.This article about an item of drinkware or tool used in preparation or serving of drink is a stub.