Metal is a permanently available resource, coming back again and again in many different guises, with no loss of quality.

Mobile Canning: The Grocer visits Crate Brewery in East London.

Everything you needed to know about the making of aluminium cans!  While the video mentions soft drinks, the process is the same.

The ingenious design of the beverage can

For larger quantities, other canning machines are an option:

Metal recycles forever…