Silver Fizz — addition of egg white
A Gin Fizz is the most well known cocktail in the Fizz family. A Gin Fizz contains gin, lemon juice, sugar, and carbonated water, served in a highball glass without ice. The drink is similar to a Tom Collins, the difference being that a Tom Collins historically used "Old Tom Gin" (a sweetened version, and precursor to, London Dry Gin) and is served in a larger glass over ice.
Simple variations on the gin fizz are
Silver Fizz — addition of egg white
Golden Fizz — addition of egg yolk
Royal Fizz — addition of whole egg
Diamond Fizz — sparkling wine instead of carbonated water
Green Fizz — addition of a dash of green creme de menthe
https://en.wikipedia.org/wiki/Gin_Fizz#Gin_Fizz
