Pisco Sour

The Pisco Sour is a South American sour built on pisco — the grape brandy of Peru and Chile — shaken with fresh citrus juice, simple syrup and egg white, then served up with a thick white foam cap. In the Peruvian style it is finished with a few drops of Angostura bitters dotted on the foam, which perfume the first sip. It is a cloudy ivory drink, sharp and bright with citrus, lightly sweet, and silky from the egg-white froth. Both Peru and Chile claim it as their national drink, and it is one of the most celebrated cocktails of the Americas.