Bruce Cohn of BR Cohn Winery & Olive Oil Company on BlogTalkRadio’s Recipe Box Show

Lemon oil, garlic oil, chilli oil, the fancy ‘Tuscan herb’ bottle by the till: flavoured olive oils are a whole shelf of their own now. Some are made properly, most are perfume in a bottle — and the difference is easy to taste once you know what to look for.

Walk into any winery tasting room or gourmet shop and you will find a rack of flavoured olive oils — lemon, blood orange, garlic, rosemary, chilli, basil, white truffle. They look glamorous and they sell well as gifts. But ‘flavoured olive oil’ covers two completely different things, one of them lovely and one of them mostly marketing. Knowing which is which is the whole game, and the label rarely spells it out.

Crushed with the fruit, or splashed with essence

The good method is the old Italian one, sometimes sold as agrumato: whole lemons, oranges or herbs are milled together with the olives, so the flavour is pressed straight into the oil as it is made. It is expensive, small-batch, and it tastes alive — you get the bitter zest and the pith, not just a sweet whiff. The cheap method is to take a neutral, often mediocre olive oil and stir in a flavour extract or an essential oil afterwards. That is faster and far cheaper, and it usually tastes like it: a one-note, slightly artificial hit with no depth behind it.

The base oil is where the trick hides

Here is the part the pretty bottle never advertises. A flavoured oil is only as good as the olive oil underneath the flavour — and flavouring is a wonderful place to hide a tired, defect-ridden or refined base oil, because the lemon or garlic masks the staleness. If a producer is proud of the base, they tell you the olive variety and a harvest date. If the label talks only about the flavour and stays silent about the oil, assume the oil is an afterthought. A citrus oil built on a good extra virgin is a genuine ingredient; one built on anonymous ‘olive oil’ is a scented novelty.

What they are actually for

Treat a real flavoured oil as a finishing touch, never a cooking fat — heat drives off the very aromatics you paid for. A good Meyer-lemon oil over grilled fish, steamed greens, a burrata or a plain cake is a small luxury. But you rarely need a rack of them: a squeeze of real lemon and your best plain extra virgin does the same job for less, and tastes fresher. Buy one flavoured oil you love, use it while it is fragrant, and be sceptical of the gift set of twelve.

	Agrumato / crushed-with-fruit	Infused / essence-added
How it is made	Citrus or herbs milled with the olives	Flavour stirred into finished oil
Taste	Bright, bitter, layered, alive	One-note, sometimes artificial
Base oil quality	Usually a proud, named EVOO	Often hides a cheap or tired oil
Price	High, small-batch	Low to mid
Best use	Raw finishing, in small amounts	Raw finishing; check the base first

Two main types	Crushed-with-fruit (agrumato) vs infused/essence
Classic citrus	Meyer lemon, blood orange, bergamot
Common savoury	Garlic, rosemary, basil, chilli
Quality signal	A named base oil + harvest date
Warning sign	Label sells the flavour, hides the oil
Use	Finishing only — never for frying
Shelf life	Shorter than plain oil; aromatics fade

Buying flavoured oil without getting fleeced

• Look for crushed-with-the-fruit or agrumato wording — that is the honest method.
• Check the base oil is named and dated; a silent base is a red flag.
• Buy one you will actually use, not a gift rack of twelve slowly going stale.
• Use it raw and soon — the aromatics you paid for die in a hot pan and fade on the shelf.

Flavoured olive oil: common questions

What is agrumato olive oil?

Oil made by milling whole citrus or herbs together with the olives, so the flavour is pressed in as the oil is made — the higher-quality method, bright and layered rather than one-note.

Is flavoured olive oil real olive oil?

It should be, but the flavour can hide a cheap or tired base oil. Look for a named base and a harvest date; if the label only sells the flavour, be sceptical.

Can I cook with lemon or garlic olive oil?

Not really — heat drives off the aromatics you paid for. Use flavoured oils raw, as a finishing drizzle.

Is a citrus oil better than just adding lemon?

A good crushed-with-fruit oil offers a depth fresh lemon cannot, but for most cooking your best plain extra virgin plus a real squeeze of lemon is cheaper and fresher.

How long does flavoured oil keep?

Less well than plain oil — the added aromatics fade quickly. Buy small, store cool and dark, and use it while it is still fragrant.

General background on flavoured and agrumato olive oils; no product endorsement.