What is the fine-grained topic of the following text: Some recipes for the Whiskey Sour cocktail call for an egg white, as a lot of old sours recipes do… But a lot of recipes these days list egg white as “optional.” I didn’t use egg white in the drink pictured above, but you’ll find it listed in some of the recipes I linked to in this post. Only return the topic.
Using egg white in Whiskey Sour cocktail recipes