If you have a lot of oxidized (black) silverware to clean, fill up the sink with hot water, add (a lot) of salt, put a large sheet of aluminum-foil on the bottom and voilla - just throw (gently
) your silverware in the sink at do something else for a few minutes.
(If it smells like rotten eggs you are doing it right
)
Just be careful - this wil remove ANY oxidation on silver, including oxidized patters if you have that!