Can you still drink beer after it has expired?

Generally speaking, expired beer should not be consumed. The detailed explanation is as follows:

Beer is a beverage containing various ingredients and microorganisms, including alcohol, yeast, sugars, and numerous flavor compounds. Once beer passes its expiration date, the yeast may continue to ferment, altering its taste and aroma and causing undesirable changes such as off-flavors or cloudiness. Moreover, bacteria and other microorganisms in expired beer may begin to multiply, especially if stored improperly—such as in high temperatures or under poor sealing conditions—which can accelerate microbial growth. Metabolic byproducts of these microorganisms may pose health risks, potentially leading to food poisoning or gastrointestinal discomfort.

To ensure safety and well-being, it is recommended to follow the expiration date indicated on the beer packaging and store beer in a cool, dry place to extend its drinkable shelf life. Before consumption, carefully inspect the beer's condition; if any signs of spoilage are detected, the beer should be discarded immediately to avoid unnecessary health risks.