Kwak is a Belgian beer, traditionally served in unusual glass. Why?

Beer was created by an alchemist
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It was designed for coachmen
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Waste from glassworks was used
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The shape reduced oxidization
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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.
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