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    Beer Pasteurization

    Pasteurization is a process that significantly changed the health of the world’s population. This document aims to describe the pasteurization process and the impact the process has had on the packaging and serving of beer.

    Pasteurization Process

    Heat Destroys Bacteria By heating a liquid to a high temperature, the bacteria in that liquid can be destroyed. In the brewing, process pasteurization is used to stop the yeast's growth that might remain in the beer after packaging.

    Cans and Bottles Traditionally, in the U.S., only beer in cans and bottles are pasteurized. The pasteurization process often occurs after the beer has been placed in the can or bottle, and the package has been sealed. The process involves running the package through a hot water spray (approximately 140° F) for two to three minutes.

    Kegs – Domestic draft beer is not normally pasteurized, and so it must be stored at 38° F to prevent secondary fermentation from occurring in the keg. Imported draft beers are usually pasteurized, and so the kegs can be stored at room temperature without negatively affecting the beer. For proper serving and to ensure an appealing taste, the imported kegs of beer must be stored and served at 38° F.



    THE Benefits

    Pasteurization enables a can or bottle of beer to be stored at room temperature for periods of time up to 120 days and beyond. Draft beer that is not pasteurized has a life of 45 to 60 days. Draft beers that are pasteurized often have a life of 6 to 9 months. This enables the pasteurized draft beer to endure long shipping times. The contents of non-pasteurized kegs used at special events or picnics and stored outside during the event should not be served once the event has ended. Pasteurized kegs can be returned to the cooler, and the contents can be served later.

    Does pasteurizing draft beer impact the taste of the beer? This is a question that has long been debated and truly a matter of personal taste.

    Two things to consider in answering this question:

    • When a brewmaster wanted to demonstrate their prowess at brewing a quality beer, the true measure of that beer's quality was how good it tasted right from the brewing vessel.
    • Do you like to eat your vegetables raw or cooked? Some people might argue that uncooked vegetables have the best taste and best attributes, such as crispness. Others might argue that cooking the vegetable releases more flavors in the vegetable.

    NOTE: One thing is certain about draft beer, whether it is pasteurized or not, it must be stored at 38˚ F to ensure proper dispensing and taste.


    Raise a Glass to Draft Beer Sales!

    For over 60 years, Micro Matic has been recognized as one of the world’s leading suppliers of draft beer equipment. Specializing in keg-to-glass technology, we offer a total solution for meeting your draft beer equipment needs. Our dedication to customer service is supported by four regional sales and distribution centers, the Micro Matic Dispense Institute for training and education, and a Certified Installer Network for draft beer installations. Want to speak with a “perfect pour” expert? Contact Micro Matic today.