http://www.basicbrewing.com/radio/mp3/bbr01-19-06.mp3
About 6 minutes in John Palmer talks about aluminum.
Paraphrasing:
A very good brewing material... using it for years... key is let aluminum build up a passive oxide like on a copper wort chiller. That layer is inert.
Good to boil water to build up a grey oxide on the inside of the pot. Wash with dishsoap. Don't use straight out of Walmart ! Yeast will take care of aluminum ions. Never had an off flavor with aluminum. Iron is another matter ! Will cause off flavors. Prefers aluminum over enamel. Better heat distribution.
Host calls it a hot button issue.
The interview goes on to talk about lagering.
About 6 minutes in John Palmer talks about aluminum.
Paraphrasing:
A very good brewing material... using it for years... key is let aluminum build up a passive oxide like on a copper wort chiller. That layer is inert.
Good to boil water to build up a grey oxide on the inside of the pot. Wash with dishsoap. Don't use straight out of Walmart ! Yeast will take care of aluminum ions. Never had an off flavor with aluminum. Iron is another matter ! Will cause off flavors. Prefers aluminum over enamel. Better heat distribution.
Host calls it a hot button issue.
The interview goes on to talk about lagering.