With only three main ingredients; whiskey, sugar, and citrus, the Whiskey Sour is an effortless yet elegant cocktail perfect for celebrating Jean-Michel Frank's unique version of laid-back luxury. It's easy to imagine his sophisticated clients in Paris, New York, or Buenos Aires enjoying this elegant cocktail in one of his glamorous interiors.
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Most sour recipes call for egg white, to add an elegant froth to the drink, but this isn't strictly necessary. Although it should be frothy , you don't have to use egg white, just make sure to shake the cocktail vigorously. This recipe from liquor.com uses simple syrup but you could substitute St. Germain to add a little French Je Ne Sais Quoi to this classic American cocktail. The Whiskey Sour 2 oz. bourbon
3/4 oz. lemon juice
1/2 oz. simple syrup 1/2 oz. egg white (optional)
Add the bourbon, lemon juice, simple syrup (and egg white if using) to a shaker and dry-shake for 30 seconds without ice. Add ice and shake again until well-chilled. Strain into a coupe glass and garnish with Angostura bitters. We used a lemon twist for photo graphic purposes only.( My strictly amateur skill set couldn't artfully dash the bitters.) I would definitely recommend the angostura bitters over the lemon twist for drinking because the oils in the lemon will affect your froth. (In fact if you look closely at the photo, you can see how the froth has disappeared around the lemon twist.)
Please keep in mind that consuming raw egg white poses a risk of food-borne illness.