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Due to a variety of beer styles and storage options for your keg, thereâs no set answer to this question. Depending on who you ask or what site you read, the answer will range between 20-120 days.
3. Third, the beer must be kept cold, but not too cold - Kegs WILL Freeze. The 30 - 45 day expiration date usually assumes the beer will be kept below 40 deg F. Higher temperatures greatly accelerate spoilage which can lead to an off taste. The entire system, including the hoses, must be kept cold, from the keg to the faucet. A good rule is to treat beer the same way you would treat milk.