Topic: How to clean rust stains?

[Lustrousstone]

Bicarb can't actually go out of date if kept dry in a sealed container at normal room temperatures

[KevinH]

A wibbling tangent ...

Another use for bicarb is as a treatment for burns. Mix with a little cold water to form a damp paste and apply to the affected area - cover with a clean bandage if necessary. Takes the pain away and promotes rapid healing.

[chopin-liszt]

Given these old-fashioned tricks really work, they're better and cheaper than new chemical things, with a far better safety record, it's as well to promote them when we have an opportunity.
I didn't know that one, Kev and I'm now very pleased I do.

I know we're wibbling and it's not the cafe, but I couldn't have put the pics on to show the effectiveness of the thick, caked, solid rust removal there.