We know that yeast is one of the most resilient organisms on the planet. It can be found just about anywhere, and while not all strains of yeast are suitable to ferment a batch of beer, there are several strains that can, and will provide fruity profiles to your beer. The real question is, did you know that this fruity character is because of insects?
If I had to guess, 9.9 Quintilian of those 10 Quintilian are fruit flies. Of course I'm exaggerating a bit, but the point is, they're pretty much everywhere. You know what else is everywhere? Yeast. And here's the kicker, that's not entirely a coincidence. Yeast love fruit flies because they are a great way to transport it to a new source of sugar. As if that weren't enough, yeast actually evolved to release a fruity aroma that attracts fruit flies right to them. The smell is connected to a gene, that produces different levels of the fruity aroma. In studies, the yeast with the most fruity aromas drew more fruit flies than those with less. Well maybe a fruit fly or two snuck its way into a snifter, but other than that, you're not directly drinking bugs, so why would I bet on that? Because that's not all.