How Long Do Growler Fills Last in How To

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How Long Do Growler Fills Last. Even one bacteria or wild yeast cell that’s present will over time multiply into billions and produce off flavours, and sometimes more carbonation. Once opened, however, leftover beer will be flat within 36 hours at best.

All About The Growler How Many Ounces of Beer are there
All About The Growler How Many Ounces of Beer are there from brewtogether.com

Growlers of beer will stay fresh for several days (some say up to 10 days) if left unopened. Having a pressurized growler makes up for any lost carbonation while filling it. Once opened, however, leftover beer will be flat within 36 hours at best.

All About The Growler How Many Ounces of Beer are there

When a growler is opened air replaces the beer inside the growler and the remaining beer in the growler oxidizes quickly. Of course, it’s best to consume the beer inside as soon as possible—ideally, you’d fill a growler the day you intend to drink it. When you get your growler home, put it in the refrigerator to keep the beer cold. I usually tape growler caps with black electrical tape to prolong fridge life.