The Clue Salt garnish locale
The Answer RIM
The answer "RIM" fits the clue "Salt garnish locale" because it refers to the edge of a glass where salt is often placed. When making cocktails like margaritas, the rim of the glass is coated with salt to enhance the drink's flavor. This makes "RIM" a perfect match for the clue, as it describes the specific area where the salt garnish is applied.