Winemaking techniques: Alcoholic fermentation and maceration – Discover the Best Wines

Alcoholic fermentation and maceration is the key process in winemaking, during which the sugars in the must are turned into alcohol through the action of the yeasts. At the same time, in red wines and in some macerated whites, maceration takes place, that is contact between the must and the skins, which allows colour, tannins and aromas to be extracted.

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Characteristics of Alcoholic Fermentation and Maceration

Colour

• Reds: Bright ruby red in the young wines, with garnet shades in the aged wines.
• Rosés: Shades ranging from pale pink to cherry red, depending on the length of the maceration.
• Skin-contact Whites: Golden yellow with amber highlights.

Aromas

• Fruity: Notes of red fruits, cherry, blackberry, citrus and exotic fruit.
• Floral: Hints of violet, rose and white flowers.
• Spicy: Hints of black pepper, liquorice and balsamic notes.
• Mineral: Nuances of flint and graphite in the more structured wines.

Palate

• Structured and tannic: In the reds with long macerations.
• Fresh and fruity: In the young reds and the rosés.
• Long and savoury: In the skin-contact whites, with a more complex texture.

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Stages of the Process

1. Destemming and Crushing

The grapes are destemmed to separate the berries from the stems and then crushed to release the must.

2. Alcoholic Fermentation

The must ferments at a controlled temperature (18-30°C depending on the type of wine) thanks to the action of the yeasts, turning the sugars into alcohol and carbon dioxide.

3. Maceration

The skins stay in contact with the must for a period ranging from a few hours (in rosés) to several weeks (in structured reds). During this process the extraction of colour, tannins and aromatic compounds takes place.

4. Draining Off and Ageing

Once maceration is complete, the wine is separated from the skins and transferred for ageing in stainless steel, concrete or wood, depending on the style desired.

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Length of Maceration and Types of Wine

• Short (6-8 days): For young wines, light reds and rosés.
• Medium (10-15 days): For structured reds and skin-contact whites.
• Long (over 20 days): For red wines with long ageing, such as Nebbiolo and Sangiovese.

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Ideal Grape Varieties for Alcoholic Fermentation with Maceration

Black Grape Varieties

• Nero d’Avola: Structured, with soft tannins.
• Sangiovese: Perfect for long ageing.
• Petit Verdot: It gives colour and tannic intensity.

White Grape Varieties (for Maceration)

• Ribolla Gialla: Excellent for skin-contact white wines.
• Greco: It gives structure and longevity to whites.

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Food Pairings

Red Wines

• Red Meat: Braises, bistecca alla fiorentina.
• Game: Wild boar stew, hare in red wine.

Rosé Wines

• Light Dishes: Summer salads, shellfish.
• Fresh Cheeses: Buffalo mozzarella, burrata.

Skin-contact White Wines

• First Courses: Truffle risotto, pasta with seafood.
• White Meat: Chicken with herbs, rabbit in white wine.

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Why Choose Alcoholic Fermentation with Maceration?

This technique makes it possible to obtain wines with greater aromatic complexity, structure and ageing potential. Perfect for anyone looking for intense reds, expressive rosés and skin-contact whites with character.