human
What is the difference between ale and lager beer?
assistant
The main difference between ale and lager beer is the type of yeast used in their fermentation process. Ales typically use top-fermenting yeast, which ferments at warmer temperatures and produces flavors that are more fruity, spicy and complex. Lagers use bottom-fermenting yeast that ferments at cooler temperatures and produces a cleaner and crisper flavor. Ales also tend to have a higher alcohol content than lagers.