How to open a mini keg May 03, 2019 15:03 We often get questions about how to properly enjoy a Bells mini-keg. So, we went to one of our Engineers for some answers. Related articles How long will a mini keg last once it has been opened? What is the shelf life of an unopened mini keg? Are your mini kegs compatible with counter-top dispensing systems? Updated Shelf life, Packaging Date & Batch Numbers Oberon tastes different. Did you change the recipe?