Why must copper pans be lined with a tin coating on the interior?

SILVER-LINED copper pans are spectacular technical cooking tools! Silver is a great conductor of heat - much better than tin - and actually even

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Why must copper pans be lined with a tin coating on the interior? - Quora

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What are the advantages of a silver lined copper pan as opposed to a tin lined one? What are the cons? - Quora

What are the advantages of a silver lined copper pan as opposed to a tin lined one? What are the cons? - Quora