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How a Wine Tasting Works

What Happens Inside the Glass

The first wine tasting tends to intimidate more than it should. There is a vocabulary of its own, specific gestures and the sense that everyone else knows something we are still missing.

How a Wine Tasting Works

How a Wine Tasting Works

12 de Jun de 2026

The truth about wine tastings is simpler than it seems. Nobody is born knowing how to tell a Touriga Nacional from a Tinta Roriz, and nobody needs to know in order to appreciate what is in the glass.

 

What sets a good tasting apart is not the amount of technical information that piles up, it is the attention given to the wine. This guide was designed for those sitting down to a tasting for the first time, or for those who have done so and never quite understood what was happening.

 

Discover with Portugal by Wine how to look at the glass with new eyes.

 

What a Wine Tasting Actually Is

 

A wine tasting is a structured experience in which several wines are tasted in sequence, with technical narration by an oenologist or wine professional. The most common format is the guided tasting of four to six wines, lasting between 45 minutes and 1h30.

 

The wines can follow a thematic criterion (a single variety across several producers, several vintages of the same wine, comparison between regions) or be a representative selection from the visited estate. The tasting almost always includes neutral bread, water, and sometimes cheese or other appetisers to cleanse the palate between wines.

 

In historic estates, it takes place in the tasting room, with views over the vineyards or cellars. In more immersive formats, it happens inside the lagar or next to the barrels.

 

The Three Phases of Tasting: Sight, Smell, Taste

 

Tasting wine is a sequential exercise. It is not just about drinking. It is about observing, smelling and feeling, in this order.

 

Sight, what colour tells: the first phase is visual. You tilt the glass against a white surface (a restaurant tablecloth will do) and observe the colour. In reds, the colour can go from light violet (young, fresh wines) to brick brown (aged, oxidised wines). In whites, from greenish straw yellow (youth, freshness) to intense gold (ageing, oak influence). Colour intensity hints at wine concentration; hue, at age.

 

Smell, 70% of tasting happens in the nose: the second phase is olfactory, and it is the most important. The human palate distinguishes only five basic tastes (sweet, salty, sour, bitter, umami). The nose distinguishes thousands of aromas. That is why almost everything we call flavour in wine is, in reality, retronasal aroma.

 

You bring the glass to your nose without swirling, and identify the first impression. Then you swirl the wine in a circular motion (this releases more aromatic compounds) and smell again. The differences between the two takes are often surprising.

 

Wine aromas fall into three families. Primary: coming from the grape, such as red fruit (Touriga Nacional, Pinot Noir), citrus (Alvarinho, Loureiro) or white flowers (Moscatel). Secondary: coming from winemaking, such as yeast, vanilla or butter (in whites with malolactic fermentation). Tertiary: coming from ageing, such as tobacco, leather, spices or dried fruit (in wines with barrel or bottle ageing).

 

Taste, what gets confirmed in the mouth: the third phase is gustatory. You take a small amount of wine, let it travel through the mouth, and analyse it in three moments. The attack (first impression), the mid-palate (volume, balance, structure) and the finish (persistence after swallowing or spitting).

 

Wine balances four elements. Acidity, the sense of freshness and salivation. Sweetness, from residual sugar or ripe fruit. Alcohol, the sense of warmth. Tannins, the sense of astringency, particularly in reds, given by the grape skin. A balanced wine is one in which none of these elements stands above the others.

 

Spit or Swallow: What to Do

 

This is one of the first doubts for anyone who has never been to a tasting. The answer is simple. In professional tastings, or in tastings with many wines, you spit into a proper container (called a spittoon or crachoir). In tasting visits with 4 to 6 wines, you swallow without problem.

 

Spitting is not impolite. On the contrary, it signals someone who knows they are about to taste a lot.

 

Basic Vocabulary Without Pretension

 

A few key words you will hear and what they mean.

 

Body: the sense of weight in the mouth. A light wine passes almost like water; a full-bodied wine lingers.

 

Structure: the combination of body, tannins and acidity. A wine with structure stands on its own, without food.

 

Finish or aftertaste: the time the flavour persists after spitting or swallowing. The longer, the better.

 

Minerality: a dry, saline note, almost like wet stone. Common in whites from the Dão or Atlantic regions.

 

Reduction: an aroma of struck match, egg. Appears in young wines; fades after oxygenation.

 

Open or closed: open means the wine expresses aromas easily. Closed means it needs time in the glass (or decanting) to reveal itself.

 

Common Mistakes to Avoid

 

Filling the glass to the top. The glass is filled to about one third, leaving room for the aromas and allowing you to swirl.

 

Serving red wine too warm. The ideal temperature for a red is 16 to 18 ºC, not Summer room temperature. If the wine seems too alcoholic, it is probably too warm.

 

Serving white wine too cold. Below 8 ºC, aromas close. The right range is 9 to 12 ºC, depending on the style.

 

Trying to agree with the oenologist. The tasting is yours. If you do not perceive that violet aroma the oenologist describes, that is fine. Each nose is different, and the tasting vocabulary is conventional, not absolute.

 

What You Can Learn in One Tasting

 

A well-conducted tasting teaches three things, even to those who had never drunk wine with attention.

 

First, to perceive differences. Tasting four wines from the same region in sequence allows you to isolate variations of variety, vintage, or vinification technique that would otherwise go unnoticed.

 

Second, to articulate preferences. Many people say they like red wine, but do not know whether they prefer young or aged reds, fruity or structured, light or full-bodied. Tasting helps to clarify.

 

Third, to demystify. Wine is culture, but it is not elitism. A good tasting strips wine of its inaccessible aura and shows that, in the end, it is fermented fruit with history.

 

Where to Have Your First Tasting

 

Choosing the right place for a first tasting matters. Estates with dedicated tasting rooms and teams prepared to welcome beginners are preferable to hotel tastings or overly technical classes.

 

In the Douro, several estates offer pedagogical tastings with 4 commented wines. In the Alentejo, programmes focus on native varieties and pairings with regional gastronomy. In the Vinhos Verdes, Alvarinho-focused visits are particularly accessible for those starting out.

 

To find wine tastings in Portugal, the offer filtered by region and type of tasting allows you to choose according to your profile. For those who want to go deeper from the start, wine classes and workshops include a formal training component.

 

The Final Toast

 

The first tasting is the start of a curiosity. For many, it is also the moment when wine stops being just a drink and becomes a language. Tasting regularly refines the palate, broadens the vocabulary, and gives access to one of the oldest and richest cultures in the country.

 

Create your tailor made experience with us and organise your first tasting with the right framing. Discover Portugal through Wine with Portugal by Wine.

 
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