The gin aids tone down the sharpness of the grapefruit, although the grapefruit helps make the botanicals on the gin just a bit more delicate. Even when you're not a fan of grapefruit juice, this flavorful cocktail may possibly just change your brain. Kelly Simone Photography/Shutterstock With a standard ratio https://blndwater.com/products/blnd-blending-water-for-single-malt-250-ml