Article by Carla Carlton; Photograph by Victor Sizemore Some so-called purists insist that you should never add a splash of water to your whiskey, claiming all that does is dilute the spirit. Not so! Adding water can actually change the flavor in your glass, and in some cases, enhance it. I discovered this while helping a local liquor store make its single-barrel bourbon picks. When you do a barrel selection, the distillery typically draws the whiskey directly from several barrels.