What is the role of stabilizers in craft beer brewing? Stabilizers play an important role in craft beer production. In the beer brewing process, the colloidal safety of beer is realized by adding various beer stabilizers, such as protease, tannin, silica gel and PVPP, etc. Some stabilizers can be used alone or in combination, such as the combination of silicone products and PVPP. The brewmaster will talk to you about the role of stabilizers in beer production.