Bowmore is one of the handful of distilleries in Scotland which malts some of its own barley, producing 30% of its needs on site. Along with this, it does both long and short fermentations – 48 and 100 hours – and matures much of its whisky on the island. Its warehouses sit low on the shore and include the famous No.1 Vaults, probably the oldest maturation warehouse in Scotland, which sits below sea level, creating a unique maturation environment. These factors combine to give Bowmore whisky its distinct character.