How to Choose Good Quality Olive Oil (And Why It Matters)

People have used olive oil for thousands of years, making it one of the oldest ingredients still found in modern kitchens. In the Mediterranean, olive oil isn’t just a cooking medium, it’s a defining flavor. It forms the foundation of many global cuisines, especially those of Italy, Greece, Spain, and the Levant. So why does it feel so hard to buy a bottle of olive oil? This guide will walk you through how to choose good quality olive oil.

Grocery stores sell dozens of options that vary in brand, region of origin, and flavor profile. Finding a truly good bottle can sometimes feel like searching for a needle in a haystack. And what about harvest dates? TikTok experts insist that you should never choose a bottle without one.

Learning to choose good olive oil can improve the flavor of your cooking immediately, with no extra effort. This guide explains how producers make olive oil, how to identify high-quality bottles, and how to choose a flavor profile for your dish.

To understand why olive oil matters so much, it helps to understand just how long humans have valued it.

A Short History of Olive Oil

In ancient Greek life

Greek mythology reflects the deep cultural importance of olives. In one version of the myth, the gods Athena and Poseidon competed for the honor of dedicating a newly founded city to themselves. To win the favor of the people, Poseidon struck the ground with his trident and produced a saltwater spring. For her gift, Athena planted the first olive tree. The people saw that the tree could provide food, oil, wood, and long-term agricultural and economic stability, and so dedicated the city of Athens to her. Regardless of belief, this story shows how deeply olives are woven into Greek culture.

In ancient Greece, the olive played a central role in daily life. Olive branches symbolized peace, prosperity, and endurance, symbolism that continues to this day. In the ancient Olympic Games, organizers crowned victors with wreaths made of olive leaves. Organizers also awarded olive oil as a prize in large, beautifully decorated amphorae.

In production

In fact, olives were first domesticated approximately 6,000–8,000 years ago in the eastern Mediterranean. While the exact location is unknown, likely regions include areas that are now Syria, Palestine, and Lebanon. Archaeologists have also discovered olive presses that are more than 4,000 years old. Given how long Mediterranean cultures have used olive oil, it’s no wonder it remains deeply rooted in the region’s cuisines and traditions.

Historically, people used olive oil not only for cooking but also as lamp fuel, a carrier for medicines, an ingredient in cosmetics, and in religious rituals. Because it served so many purposes and kept well for long periods, traders valued olive oil highly and moved it through ancient trade networks. As olive cultivation spread throughout the Mediterranean, Italian cooks also embraced it as a central ingredient, treating olive oil not just as a cooking fat but as a defining flavor.

In Italian Culture

As olives became central to Greek life, they became equally important in Italian life and cuisine. Italy’s climate is ideal for olive cultivation, with hot Mediterranean sun, rocky soil, and famously dry summers. These growing conditions allow Italian farmers to cultivate hundreds of olive varieties, including Frantoio, Leccino, Coratina, and Taggiasca. Many of these varieties are rarely found outside Italy. With over 500 recognized olive cultivars in Italy alone, regional oils can vary dramatically in aroma, bitterness, and pepperiness.

Over time, olive oil became tied to regional identity. For example, Tuscan producers make olive oils with peppery, grassy flavors, while Ligurian producers create more delicate, buttery varieties. Puglia, by contrast, favors bold and robust oils.

Because olive oil plays such an important role in Italian cuisine, cooks often use it uncooked to highlight its complexity. They frequently treat high-quality olive oil almost like a condiment rather than simply a cooking fat. Common uses include drizzling olive oil over soups (such as pappa al pomodoro or minestrone alla toscana), brushing it onto bread (like pane toscano), finishing roasted vegetables, and topping pasta just before serving.

The regional differences in olive oil flavors are not accidental. They result from olive variety, harvest timing, and processing methods, which we will discuss in the next section.

How Olive Oil is Made

When you understand how producers make olive oil, you can more easily recognize quality and see why some oils taste peppery and complex while others do not. While modern equipment has improved efficiency, the basic process of making olive oil has stayed mostly the same for thousands of years.

Harvesting the Olives

Farmers usually harvest olives in autumn or early winter, depending on the climate and the desired flavor profile of the oil. Harvest timing plays a major role in the final taste, because early-season olives produce oils that are:

• greener in flavor
• bitter
• peppery
• higher in polyphenols (natural antioxidant compounds)

Producers often consider early-harvest oils higher quality because they contain more flavor and nutrient compounds and tend to remain shelf stable for longer.

By contrast, olives harvested later in the season are riper, and they produce an oil that has:

• milder flavor
• fruitiness
• less bitterness
• higher yield

While these can be great qualities, these oils tend not to have the peppery flavor and complexity that early-season harvest olive oils have.

Farmers harvest olives either by hand or with machines that gently shake the trees. Harvesters spread nets beneath the trees to catch the olives as they fall. Because olives start to degrade quickly after picking, high-quality producers transport olives to the mill within hours of harvest.

Crushing and Milling

Producers wash harvested olives to remove dust and debris, then crush them into a paste. Traditionally, they used large stone wheels to perform the crushing. Today, most producers use stainless steel grinders, which allow for more precise control over the process.

Producers crush olives whole, including the flesh, skin, and pit. This helps create the oil’s final flavor.

After crushing the olives, producers slowly mix the paste in a step called malaxation. This allows small droplets of oil to combine into larger droplets, making the oil easier to separate. Temperature control is critical during this stage, as excessive heat can damage delicate flavor compounds.

When producers label an oil “cold extracted” or “cold pressed,” they usually mean they processed it at temperatures low enough to preserve flavor and aroma compounds.

Separating the Oil

After mixing the paste, producers spin it in a centrifuge to separate the oil from the water and solid material. This mechanical extraction process allows producers to obtain oil without the use of chemical solvents.

Producers make high-quality olive oil using only mechanical methods. In the market, many consider oils that require chemical processing to be lower-grade.

Producers may filter the oil to remove small particles, or they may leave it unfiltered for a more rustic appearance. Neither option is inherently better, though filtered oils tend to have a longer shelf life.

Why Processing Method Matters

Because olive oil is essentially fruit juice, careful handling preserves its flavor. Factors that influence quality include:

• processing speed
• exposure to heat
• oxygen exposure
• equipment cleanliness

When producers harvest carefully and process the olives gently, the resulting oil retains the aromas and complex flavors that make olive oil such an important ingredient in Mediterranean cooking.

Understanding this process helps explain why high-quality olive oil can taste grassy, fruity, or peppery, and why fresher oils often taste more vivid than bottles that have been sitting on shelves for long periods of time.

In the next section, we’ll look at how these production differences translate into the grading labels you see on bottles at the store.

Olive Oil Grades Explained

Extra Virgin Olive Oil (EVOO)

This is the highest quality olive oil.

The peppery flavor indicates that the olive oil has a high polyphenol content. Polyphenols are a major driver in olive oil’s health benefits. They act as an antioxidant, which can have the ability to protect against chronic disease and support:

• lower blood pressure
• improved cholesterol levels
• reduced inflammation
• improved insulin sensitivity

Virgin Olive Oil

While still mechanically extracted with no added chemicals, this olive oil has a slightly higher acidity. Additionally, the flavor profile may be less complex than EVOO.

Refined Olive Oil AKA “Pure” Olive Oil

Chemical refinement produces this type of olive oil. This process removes defects, unwanted flavors, and aromas. This produces a neutral olive oil with very little flavor. Producers sometimes blend this oil with some virgin olive oil to add flavor back.

Olive Pomace Oil

This is the lowest-grade olive oil. It is made by chemically processing the leftover olive pulp. Rarely recommended for home kitchens, this oil is typically used as commercial fryer oil.

Olive Oil Flavor Profiles and Their Uses

Olive oils can have a wide variety of flavors depending on the type of olive used, harvest timing, climate, and processing style. However, manufacturers typically categorize them into one of three categories:

How to Choose Good Quality Olive Oil

What is considered a “good quality” olive oil depends on the intended use, as shown above. However, there are a few things that you can look for to ensure that whatever intensity you prefer, you will be purchasing a quality bottle.

Harvest Date

Freshness matters. Olive oil is more like fruit juice than it is like wine. The longer a bottle is stored, the less flavorful it will be once opened. Stale olive oil can taste waxy, greasy, and somewhat like a crayon. If you’ve purchased cheap olive oil from a grocery store, you’ve probably tasted stale olive oil. Another undesirable effect of longer storage is that the polyphenols break down over time due to oxidation, meaning that olive oil’s natural health benefits will be lessened. Oxidation also causes rancidity, producing a musty, waxy, greasy flavor.

To prevent this, look for a bottle with a harvest date. Olive oil should be used within 18-24 months of harvest. Choose a good quality olive oil within this time frame to ensure that the olive oil you purchase will be of the highest quality possible.

Packaging

Heat and light speed up oxidation, so choose olive oils in dark glass bottles. A good alternative is olive oil that is in a metal tin. Dark plastic bottles aren’t necessarily a bad choice, depending on how you intend to use the oil. If you plan to use the olive oil very quickly, plastic bottles can be a good purchase, as they are generally a bit cheaper. However, plastic bottles allow small amounts of oxygen into the bottle over time, accelerating oxidation and staling, so they are not ideal for longer storage. Clear plastic bottles should be avoided entirely.

Country of Origin

No one country produces the best olive oil. However, olive oils made from a single region’s olives tends to be higher-quality. Olives degrade quickly once picked, and so olive oil should be produced within hours of harvest, not from imported olives.

One thing to be aware of is labels that say “packed in ___.” Just because the oil was packed in California does not mean the olives were all from California.

Certifications

PDO/DOP – “Protected Designation of Origin,” indicates that an olive oil was grown, harvested, processed, and packaged in one region.

PGI/IGP – “Protected Geographical Indication,” is less strict than PDO/DOP designation. This indicates that an oil was harvested or processed or packaged in one region. This certification is usually seen with a PDO/DOP certification.

Olive Oil Tasting Guide (or how to taste olive oil like a professional)

Olive oil is a fruit juice, and its flavor can vary widely depending on the type of olive used, the climate in the region, and harvest/milling timing. Learning how to taste olive oil helps you recognize quality and choose oils that complement your cooking.

Professional tasters evaluate olive oil based on aroma, flavor, texture, and balance.

How to Taste Olive Oil

1. Pour some into a small glass. Professional olive oil tasters use a blue glass to prevent color from affecting their opinion of the oil, but you can use any color you like.
2. Warm the oil by holding the glass in your hands for a minute.
3. Swirl gently to release its scent.
4. Smell the oil.
5. Take a small sip and allow it to coat your tongue.
6. Notice sensations in the mouth (bitterness on the tongue? pepperiness in the throat?).

Positive flavor characteristics

Fruity

• reminiscent of fresh olives
• may bring to mind green tomatoes or green apples

Grassy/herbal

• like fresh cut grass or leaves
• may bring to mind fresh herbs

Bitter

• desirable in moderation
• usually noticed on the back of the tongue

Peppery/pungent

• often felt in the throat
• may cause a slight cough

While bitterness and pepperiness may be undesirable in other foods, in olive oil, it indicates freshness and quality.

Negative Flavor Characteristics

Rancid

• similar to crayons, old nuts, or cardboard

Musty

• damp or moldy aroma

Flat

• lacks aroma or complexity

If an olive oil smells dull or stale, it has likely oxidized and should be replaced.

Trusted Olive Oil Brands

Choosing a specific brand can feel overwhelming, especially when grocery store shelves offer dozens of options. While no brand produces a perfect harvest every year, the following producers are widely recognized for producing consistently high-quality extra virgin olive oil.

Widely Available High-Quality Everyday Options

These brands are relatively easy to find in U.S. grocery stores and are most cost-effective for everyday cooking.

California Olive Ranch – Known for dependable quality and transparency about sourcing. California Olive Ranch produces both 100% California oils and global blends, and is frequently recommended as a reliable everyday option.

Lucini – Italian-produced oils that tend to have balanced flavor and good consistency year to year.

Cobram Estate – An award-winning producer growing olives in both California and Australia, often praised for freshness and quality control.

Filippo Berio – A widely distributed Italian brand that chefs frequently cite as a dependable, versatile oil for both cooking and finishing.

Premium Olive Oils for Finishing and Dipping

These oils tend to be more expensive but offer more complex flavor.

Brightland – A California brand known for carefully sourced oils and strong quality standards, often highlighted by experts as a premium option.

Kosterina – Greek extra virgin olive oil made from Koroneiki olives, known for high polyphenol content and bold flavor.

Wonder Valley – California-based producer focusing on small-batch oils with strong flavor profiles.

Frantoio Muraglia – Italian estate producer known for robust oils and distinctive ceramic bottles.

Specialty and Award-Winning Producers

These producers frequently appear in international olive oil competitions. These would make great special-occasion gifts!

Oro Bailén – Spanish producer frequently appearing in global rankings of top olive oils.

Finca La Torre – Award-winning Spanish olive oil producer known for organic oils with strong flavor complexity.

Laconiko – Greek family producer recognized internationally for very low acidity and high-quality extra virgin oils.

Picualia – Spanish brand often appearing in international quality rankings.

Storing Olive Oil

Now that you’ve learned about how to choose a good quality olive oil, you should know how to store it to protect your culinary investment.

Olive oil is sensitive to light, heat, and oxygen. As such, it is best to store olive oil in a dark or opaque glass or metal bottle. Store the bottle away from the stove, to keep the heat of cooking from degrading the quality of your oil. Choose bottles that seal tightly to prevent excessive oxidation.

A good rule of thumb is to use the bottle within 6-12 months of opening. This ensures the bottle’s first drizzle and its last will both be of good quality.

If using a large bottle of olive oil, transition to a smaller bottle when possible.

Common Olive Oil Myths

Myth: You Should Never Cook with Extra Virgin Olive Oil

Reality: Olive oil is great for cooking! While it has a lower smoke point that refined oils, its smoke point is high enough (375-410 degrees Fahrenheit) for most stovetop and oven-based cooking styles. It is useful in sauteing, roasting, frying, baking, and making sauces. It is especially useful when a flavorful oil would improve the flavor of the dish. In fact, in the Mediterranean, olive oil is used for most daily cooking.

Myth: Light Olive Oil Has Fewer Calories

“Light” in the name refers to the flavor, not the caloric content. As both light and robust olive oils are made of crushed olives, the calories will be the same in both.

Myth: The Darker the Oil, the Higher the Quality

The quality of an olive oil does not determine its color. Olive oils are different hues because olive oil can be made from a wide variety of olives, the olives can be harvested at different times of year, and they can be filtered differently.

Myth: Olive Oil Improves with Age

Olive oil degrades with exposure to heat, air, and light. Due to this characteristic, olive oil is best used within 18-24 months of harvest.

Myth: All Extra Virgin Olive Oils Taste the Same

The flavor of olive oil is determined by the variety of olive used, the climate in which it was grown, when it was harvested, how quickly it was processed, and how long it has been since then. By contrast, the title “extra virgin olive oil” describes a method of processing. As such, there can be a wide variety of flavors of extra virgin olive oils.

In conclusion…

Olive oil is one of the simplest ingredients in the kitchen, but also one of the most historically rich.

For thousands of years it has nourished civilizations across the Mediterranean.

Learning to choose a good bottle means understanding:

• how it is made
• how it should taste
• how different oils complement different dishes

Once you start tasting olive oil intentionally, it becomes more than a pantry staple — it becomes a defining flavor of your cooking.