Here's a 100% natural recipe for giving a sparkling copper cookware a boost.
In any container, pour an equal amount (tablespoon or other) of flour and sea salt.
Mix the flour and salt before incorporating the value of a dose of alcohol vinegar.
Mix until you get a soft dough.
Deposit the value of a walnut on a damp sponge and rub the copper.
It finds its brilliance as magic!
Finish by washing the pan with a drop of liquid dish soap.
Rinse and dry thoroughly with a dry cloth.
Keep this preparation natural to maintain the brass
A glass jar with lid keeps the mixture for reuse.