Toffee has had a very long history in Wales and was in some areas a traditional part of Christmas and New Year's when family and friends would gather and make toffee together.
You should make toffee in a non stick saucepan, or at least a saucepan that is not your pride and joy. Making toffee requires that the toffee be boiled and not stirred, which can result in a bit of a burned layer on the base of the pan.