The 100 Barrel Series celebrates the brewing talents and creativity of Harpoon Brewers. From experimental styles to interpretations of old favorites, 100 Barrel Series beer is a limited batch and a personal expression of the art of brewing. Every couple of months a different Harpoon brewer will spend a few late nights in the brewery, brewing test batches on the pilot system. This leads to the final recipe and, of course, a special, unique beer. You will find that brewer’s signature on each bottle of beer from their batch. So if you like the beer, you’ll know who to thank.