Oh, and one of the reasons that it took me so long to get around to it is:

It's damned hard to find tonic water that doesn't have high-fructose corn syrup in it. I only found a few brands made at all (Fever Tree, Stirrings, and Q Tonic), and could only actually find one of them to purchase (Stirrings). Sadly, even Schweppes is HFCS in the US.

I suppose, technically, I could have used diet tonic water, but it's not like I want aspartame or saccharin or sucralose or whatever they put in it these days, either.