"The Pisco sour originated in Peru and uses Pisco--a grape brandy produced in Peru and Chile. Combined with lime juice, simple syrup, and an egg white, it's a thick and foamy drink that's sure to please."
1Combine Pisco, lime juice, simple syrup, and egg white in a cocktail shaker. Cover and shake for 10 to 20 seconds to emulsify the egg white. Add ice; cover and shake until chilled.
2Strain into chilled Champagne coupe. Garnish with 4 drops Angostura Bitters swirled with two straws.