Assemblage
Assemblage
Assemblage, or blending is a critical and artistic French winemaking technique of combining different base wines which vary by grape variety, vintage or vineyard parcel, to create a balanced, complex final wine (cuvée). It enhances quality by balancing strengths and weaknesses, such as combining wines high in acidity with low acid ones, fundamental for achieving consistency in Champagne and Bordeaux.
See Also
Aging
Aging is a post fermentation process where wine rests in barrels (mainly oak) or bottles to undergo chemical changes that improves stability, develops complex flavors and clarifies the liquid.
Anthocyanins
Anthocyanins are natural polyphenol pigments located in the red grape skins, responsible for the red, purple and blue colors in young red wines. They determine the wine's hue, shifting from vibrant red to brownish orange as they age.
Lees
Lees are the dead yeast cells, grape seeds and skins left over in the fermentation tank after fermentation. There are two types of lees; gross lees and fine lees.
Malic Acid
Malic acid is a naturally occuring organic acid in wine grapes, primarily found in unripe or cool climate berries. It gives a sharp acidity, tartness and freshness to wine.
Fermentation
Fermentation is a natural biochemichal process where yeast consumes the natural sugars in grape juice and converts them into alcohol, carbon dioxide and heat. At the end of fermentation, grape juice is converted into wine.
Oxidation
Oxidation is a chemical reaction that occurs when oxygen in the air comes in contact with the alcohol in wine, converting ethanol into acetaldehyde, then acetic acid. It causes wines to lose their vibrant colors and reduces fresh fruit aromas.
Crush
The Crush refers to the period in late summer or fall when harvested grapes are mechanically broken to rupture their skins and release the juice, initiating the winemaking process.
Sulfites
Sulfites (sulfur dioxide or SO₂) are chemical compounds naturally produced by yeast during wine fermentation. They act as preservatives, also commonly added by winemakers to prevent bacterial growth, spoilage and oxidation.