Olive press traditional stone

Traditional stone olive press, an ancient method of olive oil extraction that preserves unique flavors and aromas.

About this subject

The traditional stone olive press, also known as a stone mill or stone olive crusher, is one of the oldest methods of extracting olive oil. Used since antiquity in the Mediterranean, especially in Greece, Rome, and later in Portugal and Spain, this equipment consists of a large stone wheel that rotates over a base, crushing olives into a paste. The process is slow and cold, without heating, which preserves the organoleptic properties of the oil, such as flavor, aroma, and antioxidants.

Historically, stone presses were powered by animal or human traction, and later adapted to use water or electricity, while maintaining the grinding principle. The resulting paste was then placed in natural fiber baskets and pressed to extract the liquid. This artisanal method is valued for producing high-quality oils with complex sensory profiles, much sought after by gourmets and premium producers.

Despite the prevalence of modern hydraulic presses, many regions preserve centuries-old stone mills, such as in Tuscany, Andalusia, and Alentejo. Some still operate for limited productions, keeping tradition alive. One curiosity: the stone wheel can be up to 1.5 meters in diameter and weigh up to 2 tons. The technique is recognized as intangible cultural heritage in several locations, symbolizing the connection between humans and the land in olive oil culture.

Frequently Asked Questions

What are the advantages of olive oil extracted with a traditional stone press?

Olive oil extracted with a stone press better retains the natural flavors and aromas of olives, as well as preserving antioxidants and vitamins, resulting in a superior quality product with a more complex sensory profile.

Where are stone presses still used to make olive oil?

Traditional stone presses are still used in regions such as Tuscany (Italy), Andalusia (Spain), Alentejo (Portugal), and parts of Greece, typically by small producers who make artisanal and premium olive oils.

How does the olive oil extraction process work with a stone press?

Olives are crushed by a rotating stone wheel to form a paste. This paste is then placed in baskets and pressed, separating the liquid (oil and water). Afterwards, the oil is decanted or centrifuged.