What is the main purpose of using finings during the brewing process?

Using finings during the brewing process is primarily aimed at combating chill haze and improving the long-term stability of the beer. Chill haze occurs when proteins and polyphenols in the beer bind together and form visible haze when the beer is chilled. This can be undesirable, especially in clear styles of beer where visual appeal is important.

Finings work by helping to precipitate these unwanted compounds, leading to a clearer product with improved visual clarity. Additionally, by stabilizing the beer and preventing haze formation, finings contribute to the beer's longevity on the shelf, ensuring that it retains its intended flavor and appearance over time.

Other functions of finings can include aiding in the elimination of yeast remnants or other particles that can contribute to off-flavors or spoilage, but their main role is centered on clarity and stability.