Those who regularly use silverware for table setting would do well to learn the rules for cleaning such items.
To restore dull knives and forks to their original shine, you will need to wash them with warm soapy water.
This will complete the first stage – removal of the fatty film, after which you can proceed to the second step.
While the surface of the product is still warm, lubricate it with a solution of sodium hyposulfite (thiosulfite), which can be purchased at a pharmacy.
To prepare a solution, 1 ml of the preparation should be mixed with 3 ml of water, then a cotton pad should be soaked in the liquid and the devices should be wiped with it.
Even if the surface of the spoons has become very dark, this product will make it lighter in a few seconds.
All that remains is to rinse the silver or nickel silver items under water and wipe dry.
By the way, for long-term storage of devices, it is worth wrapping them in aluminum foil: this way they will definitely not turn black.