Kwak is a Belgian beer, traditionally served in unusual glass. Why?
Beer was created by an alchemist
It was designed for coachmen
Waste from glassworks was used
The shape reduced oxidization
the brewery claims the glass was designed by the innkeeper Pauwel Kwak in the early 19th century for coachmen. A special shape of the glass allowed them to fix the beer to the carriage and avoid spills.