[net.cooks] what's the salt for

kolling@decwrl.DEC.COM (Karen Kolling) (02/13/86)

> To clean your copper pans, try vinegar or lemon juice, plus salt.
> The salt gives a bit of a scouring action, without scratching off
> the copper.

More than that, I think.  Lemon juice alone is practically a no-op.
I find it hard to believe lemon juice + salt is creating dilute HCL,
since this stuff works on the copper but leaves hands intact, but it's
doing more than just scouring.