Mastellone Hermanos SA specializes in processing and distributing dairy products. It offers pasteurized and ultra pasteurized fluid milk, cream and butter, cheese, powdered milk, and caramelized condensed milk under La Serenisima, La Armonia, and Fortuna brands. The firm also processes and distributes sausages, hams, and mayonnaise. The company was founded by Don Antonino Mastellone on October 29, 1929 and is headquartered in General Rodriguez, Argentina.