Extra virgin olive oil has a smoke point of roughly 190-210°C, while most home frying happens around 170-180°C. That means frying with extra virgin olive oil is technically possible, though it is an expensive choice with a strong flavour of its own.
Refined olive oil, having had some of its compounds stripped out during processing, has a higher smoke point and suits frying better; it does not carry the aroma of extra virgin oil, but leaves a more neutral taste behind. Which one to pick largely comes down to budget and the flavour you want the finished dish to have.
What Is a Smoke Point, and Why Does It Matter?
Smoke point is the temperature at which an oil starts giving off visible smoke; past that point the oil's molecular structure begins breaking down, turning bitter and releasing compounds you do not want in your food. Every oil's smoke point depends on the type of fatty acids it contains.
If the frying temperature gets too close to an oil's smoke point, the food picks up a smoky taste, which is why the oil used should have a smoke point comfortably above the target frying temperature.
What Is the Difference Between Extra Virgin and Refined Olive Oil?
Extra virgin olive oil is made using only mechanical pressing, with no chemical processing, so it keeps its aroma and some of its natural compounds, but its smoke point stays relatively low. Refined olive oil goes through heat treatment and filtering, a process that raises the smoke point while stripping out most of the aroma.
Bottles labelled riviera oil, or simply olive oil, on supermarket shelves are usually a blend of refined and extra virgin oil; these blends offer a middle ground that suits frying better than pure extra virgin.
What Are the Pros and Cons of Frying With Olive Oil?
Compared with most other vegetable oils, olive oil stays relatively stable when reheated and has a high proportion of unsaturated fat, which is part of why it stands out among cooking oils. That said, it costs noticeably more than typical frying oils, and its strong flavour can overpower some dishes.
Using olive oil for large-batch deep frying rarely makes economic sense; it works better for shallow pan-frying or sautéing in smaller amounts.
Which Dishes Suit Frying in Olive Oil?
Pan-frying vegetables like eggplant or zucchini is a classic case where olive oil's aroma suits the dish well, and this method is common across Mediterranean and Aegean cooking. A light layer of olive oil also works well for frying fish, adding a pleasant note without overpowering the fish's own taste.
For dishes that need a long stretch at high heat, like pastries or thickly breaded foods, a refined oil is both the more economical and the safer choice.
How Many Times Can Olive Oil Be Reused?
Olive oil starts breaking down the more times it is reused for frying; its smoke point drops a little with each heating cycle, and the oil turns darker and stronger-smelling. The general guideline is to reuse the same oil two or three times at most, straining and storing it in a clean container in between.
If the oil starts foaming, turns notably dark, or smells burnt, that is a sign it should be thrown out — those signs mean it has broken down too far to use safely.