La Serenísima – Immigrant Dairying and Modern Agro-Industry in the Pampas (1929)

The vast fertile plains of the Argentine Pampas have long been famed for beef cattle and cereal cultivation, yet the early twentieth century witnessed the rise of a modern dairy revolution. In the late 1920s, Italian immigrant Antonino Mastellone, hailing from the traditional cheese-making region of Campania, joined his wife Teresa Aiello in the small rural settlement of General Rodríguez, west of Buenos Aires. On 29 October 1929, the couple officially registered Mastellone Hermanos, choosing the poetic brand name La Serenísima in homage to the courageous Italian reconnaissance flight squadron led across the Adriatic by Gabriele D’Annunzio during the First World War.

From Artisanal Ricotta to Modern Pasteurization Infrastructure

Mastellone began by personally crafting artisanal fresh mozzarella, provolone, and ricotta cheeses, transporting the delicate products daily by passenger railway into the vibrant markets and pizzerias of downtown Buenos Aires. The demand grew exponentially as Argentine consumers embraced the superior quality and freshness of the family’s dairy goods. Recognizing that the future of dairy depended upon scientific hygiene, Mastellone Hermanos pioneered modern industrial milk handling in Argentina, introducing advanced continuous pasteurization techniques, glass bottling lines, and temperature-controlled insulated transport trucks across the province.

Agrarian Transformation and Nation-Building Food Security

Throughout the interwar and post-war eras, La Serenísima transformed the rural landscape surrounding General Rodríguez. The company established comprehensive testing laboratories that set national sanitary benchmarks for raw milk, incentivizing thousands of independent family dairy farmers across Buenos Aires province to adopt modern veterinary care, refrigerated farm silos, and herd genetics. By standardizing high-protein fortified milk and introducing refrigerated home delivery networks, La Serenísima established itself as the essential household brand of Argentine daily life.

Today, Mastellone Hermanos operates as one of the preeminent agro-food industrial organizations in South America. The historic manufacturing plant in General Rodríguez remains the beating heart of an enterprise that bridged Italian artisan food culture with the agricultural prowess of the Argentine Pampas.

Historic Site & Location