Yes, there was. Apparently it involves some sort of bottle that you have to stick them in and shake? Which sounds absolutely absurd, but apparently it's true.

That was the one I had in mind, but... eugh, no, it's not, is it? And... yes. Really, I'm glad I heard about that particular peculiarity of Froslass's evolution method before I stumbled upon it myself, as it would've been a bit... unsettling otherwise.

[...not that he'd be too torn up about it, but it's still kind of messed up.]

And that's good to know, really. I suppose it's convenient not to have the weakness to Ice and to have the full resistance to Fire, so it's not too much of an issue.