(mortar and pestle) and adding tomatoes and seasonings. History Guacamole was made by the Aztecs as early as the 1500s. After the arrival of the Spanish conquistadors, guacamole became popular in Spain. The name comes from an Aztec dialect via Nahuatl āhuacamolli, from āhuacatl (="avocado") + molli (="sauce"). In Spanish, it's pronounced, in American English, and in British English sometimes . Two U.S. "National Guacamole Days" celebrate the dish, Sept. 16 and Nov. 14, and comic mus… (More on Guacamole)