How can I effectively clean copper bottom pans to maintain their shine and durability?

To effectively clean copper bottom pans and maintain their shine and durability, mix equal parts of vinegar and salt to create a paste. Apply the paste to the pan, scrub gently with a soft cloth or sponge, then rinse thoroughly with water and dry completely. Additionally, regularly polish the copper with a commercial copper cleaner to keep it looking shiny and prevent tarnishing.