The Salty Jack is a drink that was created in the early 1920s by a bartender named Harry Craddock. It is a variation of the popular Salty Dog cocktail, which is made with gin and grapefruit juice. The Salty Jack is made with vodka, grapefruit juice, and salt.

The vodka gives the drink a smooth flavor, while the grapefruit juice provides a tart contrast. The salt is optional but can be added to enhance the flavor of the drink. The …