There is a show on PBS called A Taste of History which shows how
cooking was done several hundred years ago. They cook with a lot
of fresh vegetables over a hearth fire and go around New England
looking at Historic landmarks. On one episode it showed how
gardeners used cold frames and glass globes to extend the growing
season throughout the winter. You might find it interesting.
Episodes can be seen at http://www.atasteofhistory.com/index.html

There are also a few episodes on Youtube.


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