[MisterBastahrd]

They sell a carbonated version, and a few flavored versions.

I still buy the carbonated (black can) from time to time. I didn't buy it sooner because I was under the assumption that "Liquid Death" would also be caffeinated, and I couldn't imagine an unflavored caffeinated beverage tasting good.

[mattmaroon]

Caffeine by itself does not taste good so you’d be right. I don’t know how to describe it other than metallicy and funky, neither of which are very helpful. But it doesn’t taste much like anything else I can think of.

[professoretc]

Isn't caffeine one of the most bitter-tasting substance out there? Like, it's used to measure bitterness.