A coolship (Anglicized version of the Dutch/Flemish koelschip) is a type of brewing vessel traditionally used in the production of beer. It is a broad, open-top, flat vessel in which

wort Wort () is the liquid extracted from the mashing process during the brewing of beer or whisky. Wort contains the sugars, the most important being maltose and maltotriose, that will be Ethanol fermentation, fermented by the brewing yeast to prod ...

cools. The high surface to volume ratio allows for more efficient cooling. Contemporary usage includes any open fermenter used in the production of beer, even when using modern mechanical cooling techniques. Traditionally, coolships were constructed of wood, but later were lined with iron or copper for better

thermal conductivity The thermal conductivity of a material is a measure of its ability to heat conduction, conduct heat. It is commonly denoted by k, \lambda, or \kappa and is measured in W·m−1·K−1. Heat transfer occurs at a lower rate in materials of low ...

. The word "coolship" was trademarked by Allagash Brewing Company in the United States. The company later decided to terminate the trademark, in the interests of maintaining good relations with others in the craft beer industry.Beeriodicals. ''A Trademark Battle Averted; It's Cool To Say "Coolship".''
Retrieved 14 August 2020

Modern use

Coolships are still used in traditional

lambic Lambic ( , ; ) is a type of beer brewed in the Pajottenland region of Belgium southwest of Brussels since the 13th century. Types of lambic beer include gueuze, kriek lambic, and framboise. Lambic differs from most other beers in that it is Bre ...

brewing, where the wort is cooled and airborne yeasts and bacteria present in the brewery are allowed to inoculate the beer naturally, in order to create a spontaneous fermentation.

References

External links

* {{Lambic Brewing