So I tried the caipirinha ...
It wasn't as good as I thought it would be.
It wasn't smooth enough! I could still taste too much of the liquor -- even after muddling half a lime and two teaspoons of sugar.
Also, there was something to the liquor that reminded me of tequila. I can't quite put my finger on it. The smell, maybe? Either way, that was kind of a turnoff, too.
Of course, this didn't stop me from drinking my homemade caipirinha.
In hindsight, I should have put more lime in it. That might have helped soften the liquor's bite ...
Maybe if I get my paws on some more of the stuff, I'll try making it with lime. But I'm in no rush, and I'm certainly not going to go out of my way to find more cachaca.