If you find white flakes in a bottle of beer, what should you do?

Finding white flakes in a bottle of beer is often indicative of yeast or protein haze, which can occur in certain beer styles, especially those that are unfiltered or bottle-conditioned. However, regardless of the cause, the presence of flakes can be off-putting to many consumers and may suggest a flaw in the beer that could affect the overall drinking experience.

Choosing not to serve the beer ensures that customers receive a product that meets aesthetic and quality expectations. It protects the integrity of both the beer and the reputation of the establishment by preventing the potential for negative feedback or dissatisfaction. When faced with such an issue, it's always better to err on the side of caution, emphasizing quality and customer satisfaction over immediate service.

Checking the brewing date may provide context about freshness, and serving it immediately could risk customer dissatisfaction. Mixing it with another beer could also diminish quality control and confuse flavors, making it less desirable. Thus, not serving the beer that has visible impurities is the best course of action.