Polish Copper Items
Since we’ve already told you how to preserve your silverware, it’s only right that we do the same with copper. There’s more than one way, and therefore, you can pick the most convenient. The simplest method is to use a solution of three parts lemon juice and one part salt to wipe the copper clean.
However, according to Leslie Reichert on Martha Stewart’s website, soaking larger copper items in a mixture of three cups of boiling water, a cup of vinegar, and at least one tablespoon of salt will remove tarnish. To keep the items from staining in the future, you can rub baby, mineral, or olive oil on the surface.