 The pisco sour originated in Lima , Peru . It was created by bartender Victor Vaughen Morris , an American who had moved to Peru in 1904 to work in a railway company in Cerro de Pasco . Morris relocated to Lima in 1915 and , a year later , opened a saloon — Morris ' Bar — which became popular with both the Peruvian upper class and English @-@ speaking foreigners . Chilean historian Gonzalo Vial Correa also attributes the pisco sour 's invention to Gringo Morris from the Peruvian Morris Bar , but with the minor difference of naming him William Morris . Morris often experimented with new drinks , and developed the pisco sour as a variety of the whiskey Sour . 
