Tap beer can go bad if it is not properly stored and maintained. There are several factors that can contribute to the spoilage of tap beer, including exposure to oxygen, improper temperature control, and contamination.
One of the main reasons tap beer can go bad is due to the presence of oxygen. Oxygen can oxidize the beer, causing it to develop off-flavors and lose its freshness. When beer is exposed to oxygen, it can become stale and develop a cardboard-like taste. This is why it is important for bars and restaurants to properly handle and store their kegs to minimize oxygen exposure. Kegs should be kept sealed and stored in a cool, dark place to prevent oxidation.
Temperature control is another crucial factor in ensuring the quality of tap beer. Beer is best stored and served at a temperature range of 38-45 degrees Fahrenheit (3-7 degrees Celsius). If the beer is stored at a higher temperature, it can accelerate the growth of bacteria and spoilage microorganisms, leading to off-flavors and potential illness if consumed. On the other hand, if the beer is stored at a lower temperature, it can slow down the aging process, but it may also affect the carbonation and flavor profile of the beer.
Contamination is another concern when it comes to tap beer. If the beer lines, faucets, or kegs are not properly cleaned and sanitized, it can lead to the growth of bacteria and other microorganisms that can spoil the beer. Regular cleaning and maintenance of tap lines and equipment are essential to ensure the freshness and quality of the beer.
Personal experience: I once visited a bar that had a large selection of craft beers on tap. However, when I ordered a pint of one of the beers, I immediately noticed a funky, off-putting taste. It was clear that the beer had gone bad. When I brought it to the attention of the bartender, he checked the tap lines and discovered that they had not been cleaned in weeks. The buildup of bacteria in the lines had contaminated the beer, resulting in an unpleasant drinking experience. This experience highlighted the importance of proper cleaning and maintenance in preserving the quality of tap beer.
Tap beer can go bad if it is not stored and maintained properly. Factors such as exposure to oxygen, improper temperature control, and contamination can all contribute to the spoilage of tap beer. It is crucial for bars and restaurants to handle and store their kegs correctly, clean and sanitize their tap lines regularly, and ensure proper temperature control to maintain the freshness and quality of the beer.