Which fill type is used in the preparation of a Salty Dog cocktail?

In the preparation of a Salty Dog cocktail, grapefruit juice is the correct fill type. The Salty Dog is typically made by combining vodka or gin with grapefruit juice, and it is often served in a glass with a salted rim. This unique combination of the salty rim with the tart flavor of grapefruit juice creates a refreshing and distinctive taste that defines the cocktail.

Grapefruit juice is essential here because it contributes to the signature flavor profile of the Salty Dog, balancing the spirit with its acidity and bitterness, making it a popular choice among patrons looking for a citrusy drink. The choice of grapefruit juice sets this cocktail apart and defines its identity, underlining the importance of the correct ingredient in cocktail preparation.