Used kegs are washed when returned to the brewery, and are cleaned internally with a caustic, an acid, and steam before being rinsed and refilled with beer, Fraser says. Sierra Nevada also uses a keg line monitor system (Rotech, Swindon, England) to validate the cleaning process, and occasionally opens kegs to make sure they are being cleaned properly, he says.
Subscribe to the Wiley Food Science, Quality & Safety eNewsletter!
Get the latest food industry news delivered directly to your inbox. Sign up is free and easy!