On 7/15/2012 11:27 AM, Janet wrote:
> In article >, says...
>> Salt and vinegar are commonly used to remove tarnish from copper pans; given
>> the amount of salt and vinegar in ketchup, I'd imagine it would do the job.
>> Of course, salt and vinegar are much less expensive than ketchup and,
>> generally, as widely found in the home.
>
> Or just lemon juice.
>
Or a squeezed out (used for other purposes) lemon, dipped in salt.