Guide to Traditional Olive Oil Making

Traditional olive oil making has always been an integral part of Mediterranean culture, and its legacy continues to this day. Although advances in production methods have improved the oil extraction process, the fundamental techniques remain the same.

The process of extracting olive oil from olives is more than a mere production method. It’s a cultural craft rooted in the Mediterranean world, where families and communities have pressed olives for generations. What makes the traditional approach special is its simplicity: crushing the fruit, separating oil from vegetation water and solids, and letting the final liquid settle until it becomes clean, fragrant, and stable.

From the Olive Grove to the Mill: What Happens Before the “4 Phases”

Before grinding begins, several choices shape the quality and character of the final oil:

• Harvest timing: Early harvest can yield greener aromas and more peppery sensations, while later harvest often brings riper, softer notes.
• Fruit condition: Healthy, intact olives help avoid off-flavors. Traditional makers historically relied on careful sorting because the process offers fewer “corrections” later.
• Time to processing: Once picked, the freshness of the olive fruit begins to decline. Milling sooner helps preserve fresher aromas.

As soon as the carefully selected olives arrive at the mill, they are immediately cleaned, classified, and stored. From there, the process of making olive oil is divided into 4 phases.

• Grinding
• Pressing
• Decantation
• Storage

The Step-by-Step Process of Making Olive Oil

Before we explore the details of each phase, let’s examine where the oil itself comes from. Olive oil comes from a liquid found in the small vacuoles of olives. The extraction process involves breaking the fruit and creating a paste that is then filtered and separated from the by-products produced during the grinding phase. The following is a step-by-step breakdown of this operation.

Step 1. Grinding

Traditional grinding aimed to break the olive’s skin and pulp while helping release tiny droplets of oil stored inside the fruit. Stone mills were valued because they could crush steadily and generate a consistent paste. In older systems, the goal was not “speed,” but texture: a paste that spreads well and later releases liquid during pressing.

Step 2. Pressing

Pressing is the moment where traditional production becomes visually iconic: paste is laid onto fibrous disks and stacked, then pressure pushes liquid outward. Historically, makers adjusted stacking height, paste thickness, and pressure to balance yield and clarity.

In traditional setups, pressing produces a mixed liquid often described as oily juice—it contains oil as well as vegetation, water, and suspended solids. That’s why the next step, decantation, is essential.

You may have heard the term “first cold pressed” in relation to olive oil. This typically refers to early fractions obtained with less pressure and without the application of heat. The phrase is often used commercially today, but the underlying concept comes from classic pressing logic: gentle extraction without heat first to preserve the flavor and aroma of the freshly picked olives, then heavier extraction later.

Step 3. Decantation

Decantation is a separation method that uses gravity and time (instead of machines) to clarify oil from water and solids. Decantation works because oil and water have different densities, so they naturally separate over time: oil rises, water and heavier particles sink. Traditional producers relied on patience and visual cues—clarity, aroma, and the appearance of a clean layer of oil.

To help modern readers, you can describe the result like this:

• Top: oil layer (lighter)
• Bottom: water + fine sediment (heavier)

Step 4. Storage

La Española Olive Oil is stored in closely monitored stainless steel tanks to maintain optimal preservation conditions, ensuring an authentic organoleptic experience for consumers.

Practical storage guidance for home users:

• Keep olive oil in a cool, dark place
• Use well-sealed containers
• Avoid storing next to ovens or sunny windows

Traditional Olive Oil Making vs. Modern Extraction: What Has Changed?

Many modern mills use automated systems that speed up separation and improve hygiene control. In the past, animals such as mules and oxen were used to power olive oil mills. Mechanical innovations transformed this process, improving the efficiency of production without changing the characteristic flavor of the oil produced. As such, the logic remains familiar: create a paste, then separate oil from the rest of the fruit.

What has changed most is the separation technology:

• Traditional: The process continues, but more rudimentary means are used such as animals, stone mills, and tanks made of other materials such as terracotta in ancient times, or wooden casks up until the early twentieth century.
• Modern: Technology has made it possible to modernize the machines, so that they are now almost independent and allow each stage of the process to be controlled from a computer.

What hasn’t changed:

• The importance of olive freshness
• The need for clean handling
• The role of proper storage in preserving flavor

Frequently Asked Questions about Traditional Olive Oil Making