 Yeah, there's two kinds. They call it top fermenting and bottom fermenting. The main difference is temperature. So lager ferments cool. It ferments on the bottom, but it's sort of irrelevant. But it can tolerate cold temperatures. But they have a very long, slow fermentation, which really puts the focus on the malt and the hops. Whereas ale ferments on top, but again, that's not what makes it different. What's different is it's generally at a higher temperature, more or less like room temperature.