Salty Dog

2 oz Gin
4 oz Grapefruit juice
1 wdg Lime (optional)
Instructions
Pour the ingredients into a collins glass rimmed with salt and filled with ice cubes. Stir. Optional: Garnish with a lime wedge.
Notes
I often use 3 oz grapefruit juice, rather than 4 oz, in a double rocks glass. Some people prefer vodka in this drink.
History
Http://cocktails.about.com/od/cocktailrecipes/r/salty_dog.htm