Expanding alcohol free cans
have always been someone who has stored and enjoyed my beers at room temperature and as such my usual storage place for beers has been the cupboard with an occasional IPA or Lager going in the fridge.
Until recently this hasn't been a problem but since switching to AF I have had multiple cans (different brands) expand on me. I have seen this happen to others too in some cases it has been so bad that thier beer has actually exploded in the cupboard and taken the top off the can.
Sometimes it has happened so badly that beers have had to be recalled by the brewery.
Now I'm no expert on this but believe this is usually caused by leftover yeast getting into the cans and a secondary fermentation occurs causing a carbon dioxide billed up and this causing excess gas and eventually the can to be put under so much pressure it expands. This doesn't tend to be a problem in beers that have been pasteurised as the pasteurisation process would kill off anything that would cause secondary fermentation.
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