Ramos Gin Fizz
Recipe courtesy of Galatoire's Restaurant, New Orleans
Combine lime juice, lemon juice, and sugar in a cocktail shaker and stir to dissolve. Add gin, heavy cream, orange flower water, and egg white. Cover and shake vigorously for 10 seconds. Add 2 cups cracked ice, cover, and shake vigorously for about 45 seconds more.
Strain into a chilled rocks or highball glass and add seltzer.