Add salt and lime juice to a small bowl, mix well and set aside.
Pour tequila (optional) into a shaker filled with ice cubes; shake well to chill tequila and ice cubes.
Pour the chilled tequila into a large stemmed cocktail glass over ice cubes in an even layer.
Strain the salt mixture into the cocktail glass; stir gently with a bar spoon until well mixed then garnish with grapefruit twist if desired, or serve as is in the cocktail glass with a lemon wedge or lime wedge for garnish on side of glass (optional).
Keyword grapefruit juice Recipe, paloma with grapefruit juice Recipe