How do you properly clean a copper frying pan?

To properly clean a copper frying pan, first wash it with warm, soapy water and a soft sponge. Avoid using abrasive cleaners or scrubbers that can damage the pan's surface. For tough stains, mix equal parts vinegar and salt to create a paste, then gently scrub the pan with it. Rinse thoroughly and dry with a soft cloth to prevent water spots. Finally, polish the pan with a copper cleaner or a mixture of lemon juice and baking soda to restore its shine.