My very favorite drink (when I used to drink alcohol) was a "cherry coke" made with cherry brandy and diet coke (you can use the regular coke, but it makes it verrrry sweet) over ice. Now, that was a delicious drink. I will not say how many I could drink back in the day
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Now, I just make do with sparkling water; I really like Perrier - who doesn't? - but my local grocery chain has a really good one, too, LaCroix, bottled by Everfresh LaCroix Beverages in Warren, Michigan. I have seen it in other stores here, but I don't have any idea how wide the distribution is on it. If you see it, though, do try it.
My other favorite drinks these days are the old standbys - Diet Pepsi and iced tea.