 In Chile , folklorist Oreste Plath attributed the invention of the drink to Elliot Stubb , an English steward of a ship named Sunshine , who allegedly mixed Key lime juice , syrup , and ice cubes to create the cocktail in a bar , in 1872 , in the port city of Iquique , which at that time was part of Peru . Regardless , the original source cited by Plath attributed to Stubb the invention of the whiskey sour — not the pisco sour . The oldest known mentions of the pisco sour are from a 1921 magazine attributing Morris as the inventor and a 1924 advertisement for Morris ' Bar published in a newspaper from the port of Valparaíso , Chile . 
