W3 Wine School

Aroma Development in Wine

Flavors

Wine aromas are classified into 3 categories:

Primary (from the Grapes)
Secondary (from the Winemaking)
Tertiary (from Maturation and Aging)

New aromas appear in different phases of the vinification and evolve or disappear over time.


Secondary Aromas (from the Winemaking)

Secondary aroma development in wine refers to the flavors and aromas that emerge as a result of the winemaking process, particularly during fermentation and aging in vessels such as oak barrels.

This stage is distinct from the primary fruit aromas, which come directly from the grapes, and the tertiary aromas, which develop during extended aging.

Secondary flavors add complexity to the wine, enhancing and sometimes transforming the primary fruit characteristics. These flavors are typically more subtle than the primary fruit aromas and add depth and sophistication to the wine.

Secondary aromas provide a bridge between the fresh, fruity primary aromas and the complex, evolved tertiary aromas. They add layers of complexity and depth, making the wine more intriguing and enjoyable.


Alcoholic Fermentation

Yeasts converting sugars in the grape juice into alcohol and carbon dioxide can produce a range of flavors, often described as "yeasty" or "bready."

The breakdown of dead yeast cells during aging, like in sparkling Champagne, can add notes of dough, toast, biscuit, or brioche.

Almonds are associated with bitterness. It can come from fermentation, carbonic maceration, or from the yeast. Almond aromas can be found in many Italian white wines like Soave and Arneis, and you can sense tast bitter almonds in Italian Valpolicella.

Yeast
Yeast
Dough
Dough
Oak
Oak
Nuts
Almonds
Biscuit
Biscuit
Toast
Toast
Bred
Bread
Croissant
Croissant

Malolactic Fermentation

This secondary fermentation process converts malic acid to lactic acid, softening the wine's acidity and adding creamy, buttery notes.

Malolactic aromas are often found in Chardonnay. These include butter, cream, chesse and sometimes butterscotch or caramel.


Butter
Butter
Cream
Cream
Cheese
Cheese
Caramel
Caramel

Other Techniques

Techniques like batonnage (stirring the lees) or carbonic maceration can introduce additional complex aromas like nuts, caramel, banana or even bubblegum.


Nuts
Nuts
Caramel
Caramel
Banana
Banana
Bubble Gum
Bubble Gum

Banana aromas can come from a fermentation process called carbonic maceration, commonly used in the production of Beaujolais Nouveau.


Examples of Secondary Aromas in Wine


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