Harvey Nichols launches exclusive range of Olive Oils

Every few years a celebrated chef puts their name to a range of olive oils in a smart department store. Sometimes the oil is genuinely good. Often what you are paying for is the label, the box and the shelf it sits on.

The chef-branded olive oil is a fixed feature of the food business. A famous kitchen partners with an established bottler, a range of infused oils and dressings appears in a department store at a comfortable price, and everyone gets what they came for: the chef gets reach, the bottler gets prestige, and the shop gets a gift item that photographs beautifully. There is nothing wrong with any of this. But it is worth understanding what is actually in the bottle, because the interesting question is never whose name is on the front — it is what happened to the fruit.

Infused, flavoured, or crushed together?

Three quite different things hide behind the word flavoured, and the price rarely tells you which you have.

The cheapest method is a flavouring, natural or otherwise, stirred into a neutral oil. It is stable, consistent, and tastes of the flavouring rather than of olives. The middle method is infusion: real lemon zest, chilli, garlic or rosemary steeped in oil and then strained out. Done with good oil and fresh material this can be lovely, though the aromatics fade faster than the oil does. The best method is co-milling — the Italians call the citrus version agrumato — where whole lemons or oranges go into the mill with the olives and the two are crushed together. The essential oils from the peel emulsify into the olive oil at the moment of extraction. It is expensive, unmistakable, and rarely what you are being sold.

Method	What it is	Tell-tale sign	Worth paying for?
Flavoured	Flavour compound added to oil	Tastes of the flavour, not of olives; very consistent	Rarely
Infused	Real zest, herb or chilli steeped and strained	Aroma fades over months; some sediment or colour	Sometimes
Co-milled (agrumato)	Fruit crushed with the olives at the mill	Cloudy, intense, high price; says co-milled or agrumato	Yes, if fresh
Chef-branded plain oil	A bottler’s oil under a famous name	No harvest date, no single origin, big box	Depends entirely on the oil

What the famous name does and does not tell you

A chef’s endorsement tells you that someone with a good palate approved a sample. It tells you nothing about the harvest date, the cultivar, the region, the milling temperature or how long the oil sat in a warehouse before it reached the shelf. Those are the variables that decide whether the oil in your hand tastes alive or tired, and they are all printed — when they are printed at all — in small type on the back.

The commercial reality is that celebrity ranges are almost always produced by an established bottler with the volume and distribution to fill a national account. That is not a scandal; big bottlers make plenty of decent oil. But it does mean the range sits in the same supply chain as everything else the bottler produces, and the premium you are paying is for the name and the presentation rather than for a rarer or fresher raw material. If you want to know what you are buying, ignore the front and read the back — the same discipline you should apply to any bottle claiming to be extra virgin.

Where flavoured oils genuinely earn their place

I am not a purist about this. A good lemon oil over grilled fish, a chilli oil on a bean soup, an orange oil on a chocolate dessert — these are real pleasures, and they save you the fiddle of doing it yourself. The rules are simple. Buy small bottles, because aromatics fade long before the oil goes rancid. Buy them for finishing, never for cooking, since heat destroys the very thing you paid extra for. And be suspicious of a full set of eight flavours in one box: that is a gift, not a larder, and half of them will still be nearly full in two years.

Home infusion is easy and usually better value — with one important safety exception. Garlic, herbs and anything else fresh and low-acid stored in oil at room temperature can support the growth of Clostridium botulinum. If you infuse fresh garlic at home, keep it refrigerated and use it within a few days. Commercial producers acidify or use dried material for exactly this reason.

Buying rules

• Read the back label: harvest date and origin beat any name on the front.
• Prefer small bottles of flavoured oil — the aromatics are the first thing to go.
• Finish with them, never fry with them.
• Treat multi-bottle gift sets as presents, not as a working larder.
• If you infuse at home with fresh garlic or herbs, refrigerate and use quickly.

Chef-branded and flavoured olive oils: common questions

Is a chef-branded olive oil better?

Not automatically. It tells you a good palate approved a sample; it says nothing about harvest date, cultivar or freshness, which are what actually decide quality.

What is the difference between infused and flavoured oil?

Infused oil has real zest, herbs or chilli steeped in it and strained out. Flavoured oil has a flavour compound added. Infused generally tastes better and fades faster.

What does agrumato mean?

It refers to oil made by crushing whole citrus fruit together with the olives at the mill, so the peel oils emulsify into the olive oil during extraction. Intense and expensive.

Can I cook with flavoured olive oil?

You can, but it wastes the point. Heat drives off the aromatics you paid for. Use flavoured oils raw, as a finish.

Is home-infused garlic oil safe?

Only with care. Fresh garlic in oil at room temperature can support botulinum growth. Keep home infusions refrigerated and use them within a few days.

Drawn from trade practice in the branded and flavoured olive oil business.