I have a batch of Chinook IPA that I’ve been pulling out from time to time throughout the year. It was brewed 11/15/10…bottled on 12/14/10. I’ve had no issues with any 12 ounce bottles, or flip tops that I’ve enjoyed from this batch. However recently I got into the 22s that I bottled. 4 have been stored in a Wine fridge at 42 degrees. So far all 3 that I have opened have foamed like a volcano, instantly…and so fast I need to wait for it to stop. I’m lucky to get 3/4 of a pint of beer from the 22. The beer I’m able to salvage is still as delicious as all the other Chinooks that I remember from the 12 ounce bottles.
Any ideas as to why this is suddenly happening?
I typically will bottle a case of 12 ounce bottles and make the 2nd a mix of 22s and 1/2 and full liter flip-tops for entertaining and gifts. to date, I’ve never had this problem with and other brew.