Black and tan; shandy

[A. Vine]

Bruce Dykes wrote:
>
> So, is the seltzer/club soda distinction technical or linguistic? I've fired
> off an email to Schweppes NA asking them if there's a difference between
> bottled seltzer and bottled club soda. The Canada Dry site didn't have any
> feedback address, just an entry form for a sweepstakes. If Schweppes doesn't
> have an answer for me, I may wind up shooting that at Cecil...

As far as I remember, the difference is salt.  Seltzer has it, club soda
doesn't.  But I haven't looked at the labels or done anything to verify this.