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Tannins

Tannins are astringent compounds found in wine that contribute to its texture and aging potential, often causing a drying or puckering sensation in the mouth. They are derived from grape skins, seeds, and stems, as well as from oak barrels used during aging.

/ˈtænɪnz/

Examples: Cabernet Sauvignon, known for its high tannin content, often exhibits a firm tannic structure., Nebbiolo grapes, used in Barolo and Barbaresco, produce wines with high tannins that soften with age., Pinot Noir typically has lower tannins, contributing to its silky texture.

Malic acid

Malic acid is a naturally occurring organic acid found in grapes that contributes to the tart, green apple-like flavor and crispness in wine. It plays a significant role in the taste and acidity of wine.

/mælɪk ˈæsɪd/

Examples: A young, unoaked Chardonnay often exhibits high levels of malic acid, contributing to its crisp and tart profile., In cooler climate regions, such as parts of Burgundy, wines may retain more malic acid, enhancing their freshness and acidity., During the winemaking process, a winemaker might decide to block malolactic fermentation in a Sauvignon Blanc to preserve the wine's vibrant malic acidity.

Filtration

Filtration in winemaking is the process of removing solid particles from wine to clarify and stabilize it before bottling, using various types of filters to achieve different levels of clarity and remove unwanted elements like yeast, bacteria, and sediment.

/fɪlˈtreɪʃən/

Examples: Using a diatomaceous earth filter to remove yeast and other particles from red wine before bottling., Employing a membrane filter for sterile filtration to ensure the wine remains free from spoilage organisms., Applying cross-flow filtration to gently clarify white wine without stripping it of flavor and aroma compounds.

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