Biocides
There is another issue with cans that has to do with the biocides employed in their manufacture. The manufacturing process needs oils for lubrication and the oils host microbes so biocides are employed. The early biocides were formaldehyde based and left such a taste that people complained that their beer had changed when a more flavor neutral biocide was introduced. I can't remember which brewery this was but by popular demand they had to put formaldehyde back in the mix. I don't know what is going on now but I'd do some research before considering cans. Also, what is the overall environmental cost of the cans? They are very very energy and water intensive to make starting from the ore mining through to final production.
There is another issue with cans that has to do with the biocides employed in their manufacture. The manufacturing process needs oils for lubrication and the oils host microbes so biocides are employed. The early biocides were formaldehyde based and left such a taste that people complained that their beer had changed when a more flavor neutral biocide was introduced. I can't remember which brewery this was but by popular demand they had to put formaldehyde back in the mix. I don't know what is going on now but I'd do some research before considering cans. Also, what is the overall environmental cost of the cans? They are very very energy and water intensive to make starting from the ore mining through to final production.
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