Brewer’s Best® Gin Barrel Chips come from freshly emptied, hand selected barrels that are no longer usable due to a leak or non-repairable defect. The wood and spirit profiles are still very viable, so they’re chipped up, filtered for size consistency, and sealed in plastic to prevent them from drying. Packages are purged with nitrogen gas to assure sterility. The ethanol from the spirits that has soaked deep into the wood not only adds to the flavor profile, but also helps assure sterility. 4 oz package.