What are tannins in Wine?

Have you ever experienced, while tasting a red wine, that slight grip on your palate, almost like a drying sensation? Nothing to worry about: it’s simply the signature of the tannins present in the glass. Far from being a flaw, they are, on the contrary, essential to a wine’s identity. They are what give it structure, depth, aging potential, and shape its character. Their expression depends above all on the winemaker’s choices and their mastery of the winemaking process.

In fact, in our Rhône Valley wines, tannins play a central role in every tasting. They come from both the grape varieties we cultivate and the methods we use in the cellar. But where exactly do they come from, and why do they influence the tasting experience so much? We’ll explain everything.

Where do the tannins in wine come from?

The answer is multifaceted: tannins come as much from the vine as from the choice of grape variety, the terroir, and the winemaker’s techniques in the cellar. In the vine, these phenolic compounds are naturally present in the skin, seeds, and sometimes even the stems of the grape. Their presence, whether pronounced or not, also depends on the grape variety. Some, like Syrah, which is very common in Xavier Vignon’s wines, are particularly rich in tannins. Conversely, Merlot or Gamay offer softer tannins, resulting in wines that are more approachable at a younger age.

The terroir also plays an essential role. Indeed, the composition of the soils, the exposure, the climate and the ripeness of the grapes at the time of harvest directly influence the tannic quality of a vintage.

Finally, tannins can also come from the winemaker’s interventions in the cellar, particularly through their choice of the type of wood used for the barrels.

Did you know that? 

Tannins are not only found in grapes! Indeed, this natural substance is also found in plants, fruits, tea, and certain spices. 

How does winemaking influence the presence of tannins? 

Tannins are naturally present in grapes, but to become wine, they require some human intervention. Everything happens during maceration, when the juice remains in contact with the skins and seeds. The longer this stage, the more structure and tannic richness the wine gains.

This is why red wines, which benefit from prolonged maceration, are generally much more tannic than a rosé or a white wine, where contact with the solid parts of the grape is very limited.

The winemaker’s role is crucial here. They choose the maceration time, the fermentation temperature, and the techniques to be used, such as punching down, pumping over, and pressing. All these actions shape the quantity and texture of the tannins. Added to this is barrel aging: depending on the type of wood used, tannins can be added to those of the grapes, either strengthening or softening the final structure of the wine.

What is the role of tannins in wine?

In practical terms, these compounds, invisible to the naked eye, play a crucial role in red wines: they contribute color (wines rich in tannins are often darker), structure, and above all, longevity. A wine with well-balanced tannins can evolve over time, gaining suppleness and roundness as it ages in the cellar.

This is precisely what our  2023 Vacqueyras Bio Nature reveals . Made from Grenache Noir and Syrah, it perfectly illustrates how tannins structure a young wine. Its ruby ​​color with purplish highlights precedes a fresh nose of Morello cherry. On the palate, one finds a luscious and energetic character, supported by firm tannins that extend into a spicy finish. Here, the fruit and tannic power complement each other, offering a fine example of a young wine with a strong character.

Why do tannins dry out the mouth… And how can we tame them during tasting?

As we have seen, tannins are naturally present in grapes, but their quantity and texture depend on the style desired by the winemaker. Some red wines may seem more structured and full-bodied on the palate than others, offering a sensation that discerning wine lovers will immediately recognize: a texture that slightly grips the palate and taste buds: the presence of tannins!

This impression of “dryness” simply comes from their interaction with salivary proteins. Far from being a flaw, it actually reveals the wine’s structure and potential. That said, a few tips can help to tame them for a smoother tasting experience.

First, keep an eye on the serving temperature. Serving a wine slightly warmer allows the tannins to soften and round out on the palate. Food and wine pairings also play a key role: the protein and fat content of red meat or aged cheese naturally softens the firmness of the tannins. Finally, time remains the surest ally: a very tannic wine often gains in balance and elegance after a few years of aging.

The perfect example? Our  2020 Côtes du Rhône Vieilles Vignes Organic . Its tannins are present, yet remarkably supple. They are noticeable from the very first sip, providing structure and substance without ever overpowering the red fruit and spice aromas. On the contrary, they enhance the wine’s length and elegance, showcasing the finesse of perfectly integrated tannins.

Tannins in the service of taste

Tannins are more than just a sensation on the palate: they give red wines their energy, depth, and ability to age. In their youth, they provide structure and definition; with age, they refine and reveal a complexity that no other element can replace.

At Xavier Vignon, each grape variety and each terroir is carefully cultivated to achieve the perfect balance: present yet harmonious tannins that support the aromas without ever overpowering them. The result? Wines where structure meets elegance, crafted for aging, but already captivating in their early years.

But what if the best way to understand tannins was simply to taste them? Explore our wines and discover for yourself how they give wine its full dimension!