From the brewer:On our case cartons we haveBest bydates stamped on them, our kegs haveBorn ondates on the collar. You could just buy beer that is open dated, instead of the brands listed above. Halfway up the neck of the bottle in Julian format: DDD-YY. Epic Ales:Uses abatchnumber. It's just on the packaging boxes. Karl Strauss:Uses abottlingdate. Pizza Port:Uses abottlingdate. The first two numbers indicate the month and the last two numbers indicate the year. Narragansett:Uses abottlingdate. The longer expiration date was made possible by improving ingredients and production methods. From the brewer: If you look at the label on the bottle, there is a notch taken out on the month it was brewed.