What Causes A Tin To Swell?

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Sep 18, 2015
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41,957
I was going thru my stash trying to decide what I want to open next and I came across a tin of C&D Sunday Picnic that is all swollen up, the top and bottom are bulging out to the point that it looks like it's about to blow, is this normal? Do I need to open this before it blows the top? Has anyone had one that did open itself? This is a good thing right?

 
It's always baffled me that those C&D and GLP tins will swell up with age, but those thin round tins will get sucked in, and jars will close up as the bacteria eats up the oxygen. There's much written about different types of aging, different bacterial, or magic micro bugs as I like to think of them. It's all a part of the great mystery of the plant, I guess.

 

jefff

Lifer
May 28, 2015
1,915
6
Chicago
I have a 15 year old tin of Fillmore that is looking like it is ready to deliver soon. I will be opening that next week.
I can't wait!

 
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