Tarnished Copper
Polish with a commercial polish for copper following
directions on the container.
Polish can be made at home by moistening salt with
vinegar or lemon juice to make a paste for a bright
finish or a paste of rottenstone and olive oil for a dull
finish.
After polishing decorative items, spray with lacquer
to preserve color if desired.
The "bronze disease" also attacks copper. Use hot
vinegar and salt, or lemon juice and salt, copper
cleaner, or buttermilk to remove these patches of
corrosion. After treating, wash promptly with soap and
water, rinse and dry.