It's full of all the vitamins and minerals you know you need - especially magnesium which is not much in evidence in our NZ soils - but it's not particularly tasty on its own.
My favourite way of eating it is to boil a potato in its skin, adding a couple of decent sized silverbeet leaves in the last couple of minutes. I strain it, add a small piece of butter (that's actually butter. Not any sort of margarine or non-dairy spread...) and mash. It's my new 'must have with dinner' creation! Maybe a bit rustic looking, but tasty. I don't use salt, but if you do, I guess you might add a little of that as well.