It is illegal to destroy or tamper with a beer cask that belongs to someone else.

The Law Explained

Before modern keg tracking, breweries lost immense amounts of money to people stealing, hoarding, or destroying their expensive wooden casks. The state passed stringent laws to protect the property of brewers and distributors, making it a specific crime to mess with another man's barrel. Given the Pacific Northwest's love of craft beer, the spirit of this law lives on.