The overflow of beer can occur due to a number of factors temperature fluctuations of the beer (which can occur during transportation and storage between the brewery and the customer).  

This can cause CO2 to form and be reabsorbed into solution to a point where the CO2 can’t be reabsorbed into the beer which then causes this overflow to occur once the can is open.  We operate fully chilled warehouses and work with our transportation companies as well as retailers to ensure that the beer is kept cold throughout the beers lifecycle.  

We have a stringent internal quality control procedure that every batch undergoes before release to ensure optimal customer satisfaction.