What is the reason for keeping beer at 38°F throughout the distribution process?

Keeping beer at 38°F throughout the distribution process primarily serves to avoid excessive foaming. At this temperature, the beer remains stable and reduces the risk of over-carbonation, which can lead to foaming issues when pouring. If beer is stored at higher temperatures, the increase in temperature can cause the CO2 to become less soluble, resulting in excessive foam when the beer is eventually poured. This not only affects the beer’s presentation but can also lead to waste and an inconsistent flavor experience for the consumer.

While other factors, such as carbonation and flavor development, are important in the overall quality of beer, maintaining a consistent temperature helps ensure the beer arrives at its destination in a condition that minimizes undesirable effects like excessive foaming.