Cocktail #19. White Lady, The Mixellany Guide to Gin

Cocktail #19. White Lady
Source: The Mixellany Guide to Gin

Recipe:
2 shots gin
3/4 shot Cointreau
3/4  shot freshly-squeezed lemon juice
1/4 shot sugar syrup
1/2 egg white

Shake with ice, strain into a chilled cocktail glass and garnish with a lemon twist.