Yeast can be a mysterious and difficult piece of the brewing puzzle. One of the most problematic aspects of working with yeast is maintaining good flocculation after fermentation, whether it’s getting lager yeast to settle out completely or getting wheat beer yeasts to stay in the beer. If you’ve ever wondered, Why is flocculation important? How does flocculation work? What causes flocculation problems? ƒyou’ll find the answers here.