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There are two types of pasteurization methods used in brewing: tunnel pasteurization and flash pasteurization. In tunnel pasteurization, which is more widely used in breweries, cans or bottles of packaged beer is moved slowly through a tunnel of fixed temperatures. In flash pasteurization (or plate pasteurization), large quantities of beer is pasteurized at the same time via a heat exchanger and is often used to before the beer is packaged <ref name="Vaughan_2005" />.  See also:* [http://wiki.zero-emissions.at/index.php?title=Pasteurization_in_beer_production "Pasteurization in Beer Production", AEE - Institut für Nachhaltige Technologien wiki.]* [https://www.craftbrewingbusiness.com/packaging-distribution/preserve-product-quality-flash-pasteurization/ "Is flash pasteurization right for your craft beer?" by Chris Crowell in Craft Brewing Business website (details case studies for temperatures and times).]