olive oil taster by alessi of italy
Wine and olive oil are closer cousins than people think: both are crushed fruit, both carry the fingerprint of their variety, soil and weather. Which is why serious oil is judged the way wine is — nosed, slurped and scored — from a small blue glass designed to hide the one thing that lies to you.
Somewhere along the way, olive oil borrowed wine’s whole vocabulary — fruity, grassy, bitter, pungent, a finish that lingers — and it turns out to be earned. Both are the juice of a fruit, changed by the variety grown, the ground it grew in and the season it endured. So it makes sense that the people who grade oil for a living taste it with the same seriousness a sommelier brings to a glass of red. The novelty tasting cups sold by design houses play on exactly that romance. The method underneath, though, is real, standardised, and worth knowing.
Why the glass is blue
The single most important tool in professional tasting is a small, cobalt-blue tumbler — and its colour is the whole point. Oil’s colour tells you almost nothing useful: a golden oil is not milder and a green one is not automatically better, because green simply means more chlorophyll, not more quality. But colour is deeply suggestive, and our eyes bully our tongues. The blue glass hides the oil entirely, so the taster judges only smell and flavour. That is the first lesson any beginner should steal: you cannot see quality, you can only taste it.
The method, step by step
Pour a small measure into the glass, cover it with one hand and cup it in the other to warm the oil to roughly body temperature, which lifts its aromas. Swirl, uncover, and breathe in: look for fresh notes — cut grass, green tomato, artichoke, almond, ripe fruit. Then take a small sip and, this is the part that feels silly, slurp air through it with your lips slightly parted, spreading it across the whole mouth. Aerating the oil releases its flavour and its pungency. Swallow slowly and wait: a good extra virgin bites the back of the throat and can make you cough. That peppery kick is a feature, not a fault.
| Sensation | What it means | Good or bad |
|---|---|---|
| Fruitiness (grass, tomato, almond) | Fresh, well-made oil | Wanted |
| Bitterness on the tongue | Young, healthy olives; polyphenols | Wanted, in balance |
| Pungency / throat catch | Freshness and antioxidants | Wanted |
| Rancid, greasy, crayon-like | Old or badly stored oil | A fault |
| Musty, muddy, vinegary | Poor fruit or fermentation | A fault |
What the panel is really hunting
Formal panels — the ones whose verdict decides whether an oil may legally be called ‘extra virgin’ — are not chasing deliciousness so much as the absence of defects. They are trained to catch three classic faults: rancid (old oil gone stale and greasy), fusty or muddy (olives left to ferment in heaps before pressing), and winey or vinegary (fermentation gone wrong). An oil with any measurable defect drops a grade, no matter how pretty the label. This is the quiet machinery behind the words on the bottle, and it is why the same brand can taste flat one year and vivid the next.
Do it at home
You do not need a gadget or a lab. A small tumbler you cannot see through — wrap a plain glass in foil if need be — a splash of oil, a warm hand and a slurp will teach you more in five minutes than any label ever will. Taste two oils side by side and the differences leap out: the tired supermarket bottle against a fresh, single-estate one, and suddenly ‘fruity’ and ‘rancid’ stop being marketing words and become things you can feel on your own tongue.
- Ignore the colour — it predicts neither taste nor quality; that is why pros use a blue glass.
- Warm the oil in your hand to about body temperature before you smell it.
- Slurp air through it — aeration is what releases the flavour.
- Welcome the bitterness and the throat-catch — they signal a fresh, healthy oil.
- Taste two at once — comparison is the fastest teacher.
Tasting olive oil: common questions
Why do tasters use a blue glass?
To hide the oil’s colour. Colour is suggestive but tells you little about quality, and our eyes bias our judgement. A cobalt-blue glass forces the taster to rely on smell and flavour alone.
Should good olive oil be green?
Not necessarily. Green simply means more chlorophyll, which depends on variety and ripeness at harvest, not on quality. Excellent oils range from golden to deep green.
Is it normal for olive oil to sting my throat?
Yes — a peppery catch at the back of the throat is a sign of freshness and antioxidants (polyphenols), not a fault. It fades as oil ages.
What are the main faults tasters look for?
Chiefly three: rancid (old, greasy, stale), fusty or muddy (olives fermented before pressing), and winey or vinegary (bad fermentation). Any measurable defect disqualifies an oil from the extra-virgin grade.
Can I really taste oil at home?
Absolutely. Use a small glass you cannot see through, warm a little oil in your hand, slurp it with air, and compare two oils side by side. No equipment required.
The blue-glass ritual looks precious, but it fixes a real problem: your eyes are liars. I have watched buyers talk themselves into a mediocre oil because it looked a lush green, and dismiss a superb one for being pale gold. Cover the glass, warm it, slurp it, and judge only what your nose and mouth report. Do it with two oils at once — a cheap one and a good one — and you will never again be fooled by a bottle’s colour or its price.
Based on the International Olive Council’s standard organoleptic tasting method.