How do you effectively clean copper pans to maintain their shine and prevent tarnishing?

To effectively clean copper pans and maintain their shine while preventing tarnishing, mix equal parts of vinegar and salt to create a paste. Use a soft cloth to apply the paste to the pan, scrub gently, then rinse with warm water and dry thoroughly. Additionally, regularly polish the copper pans with a commercial copper cleaner to keep them looking shiny and prevent tarnishing.