Originally Posted by Ted Shoemaker

Hello,

I was watching an educational video on Youtube, which was explaining
how to prepare tea. It said, earthenware pots and kettles are better
(for tea) than steel, steel is better than enamel, and so forth. But
it didn't say why.

The video was derived from a film made in the 1940's, so I don't
expect I can get much help from the filmmakers themselves.

Can someone shed more light on materials for teapots and kettles?

Thank you!

Ted Shoemaker