Tanqueray’s “London Dry” designation actually signifies quality — as opposed to regular gin, London Dry gin must use a base alcohol that’s made only with top-quality, natural botanicals, and only water can be added following the second distillation. When extracted from the still, London Dry gins are around 70% alcohol by volume but diluted to around 40% when sold. When you purchase Tanqueray London Dry gin, you’re getting a high-grade gin whose flavor comes entirely from all-natural botanicals.