Alcohol (wine) refers primarily to ethanol produced when yeast ferments grape sugar. Alcohol is usually expressed as a percentage by volume (ABV) on the label. It contributes body, warmth and texture, and affects the balance between fruit, acidity, tannin and sweetness. Most table wines fall broadly within the range of about 8–15% ABV, while fortified wines are generally higher.
During fermentation, yeast converts grape sugars into ethanol and carbon dioxide. Riper grapes generally contain more sugar and can produce higher-alcohol wines if fermentation proceeds to dryness. Fermentation may be stopped or controlled to retain residual sugar, and fortified wines receive grape spirit to increase alcohol.
Alcohol can create warmth or heat on the palate, especially in wines with high ABV or when served too warm. It also contributes to the perception of body and fullness. A wine with elevated alcohol can still feel balanced if fruit, acidity, tannin and sweetness are integrated.
High-alcohol wines can intensify the sensation of chilli heat and may overwhelm delicate dishes. Wines with moderate alcohol can be more versatile with spicy food, while fuller, higher-alcohol wines may suit rich meats and braises.
Example: a Mosel Riesling may be relatively low in alcohol, while a ripe Amarone or warm-climate Shiraz may be substantially higher.
Chef’s note: check the ABV on the label and consider serving temperature. A high-alcohol wine served too warm can taste hot and unbalanced.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.
