- Nov 22, 2011
- Reaction score
- People's Republic of Maryland
Tinning of copper or brass for the use of food is a modern thing, trying to avoid the formation of verdigris, from acidic substances being in contact with the copper or brass for a long period of time. Verdigris is toxic, and will mess with your digestive track. However, as long as you keep the copper or brass clean, there is no need for the tin. Apple butter is very acidic, as is brewing beer, and they are/were both made in untinned copper vessels.I think the tin was applied over the copper to help prevent a type of corrosion also?