In article 1>,
says...
> According to Duke University, yes. Excerpt from the chem website:
>
> http://www.chem.duke.edu/~jds/cruise...er/wattap.html
>
> "Seltzer water is tap water that has been filtered and carbonated. Club
> soda is seltzer water with added mineral salts."
>
>

Club soda originated as a manufactured replacement for mineral water
that was obtained from natural springs. The added salts are meant to
mimic the subtle taste of natural minerals.

--
Peter Aitken
Visit my recipe and kitchen myths pages at www.pgacon.com/cooking.htm