What is the primary spirit used in a Royal Fizz?

The primary spirit used in a Royal Fizz is gin. This cocktail is a variation of the classic fizz family and typically incorporates gin alongside fresh lemon juice and sugar, resulting in a refreshing and effervescent drink. Gin's botanical flavors complement the citrus elements, creating a well-balanced profile that is both aromatic and flavorful. The addition of egg white in some recipes contributes to a creamy texture, while the carbonation from soda water enhances the drink's lightness and makes it particularly refreshing.

In contrast, vodka, white rum, and scotch do not embody the traditional flavor profile or characteristics typical of a Royal Fizz, making them unsuitable as the primary spirit for this specific cocktail.