OK, I’ve begun guzzling down this solution.
(Note: evil cat lurking on windowsill, waiting for me to show a moment of weakness.)
I’m following some commenters’ suggestions — I made it up warm, to go into solution, chilled it, and am sucking it down with a straw. It’s not too bad so far. I wouldn’t drink this stuff by choice, as it’s mainly just thick and salty and flavorless, but I’m feeling like it’s doable right now. Of course, I’ve just started, and I have 4 liters to go.
I’ll post proof that I’ve finished it, if and when I finish it.