|Vodka||1⁄4 Pint (150 Milliliter)|
|Grapefruit juice||1⁄4 Pint (150 Milliliter)|
|Salt||1 Ounce (25 Gram)|
|Ice cubes||4 (To Serve)|
Pour the vodka and grapefruit juice into a jug and stir well.
Lightly whisk the egg white and pour onto a plate.
Put the salt on another plate.
Dip the rim of each glass in the egg white, then in the salt.
Half-fill the glasses with ice and pour over the cocktail.