Tannin Extraction

Tannin extraction is a complex process that is affected by a number of factors, including maceration time, ethanol content, and the interaction of tannins with other components in the wine.

Saignee, a method of bleeding off some of the juice early in the fermentation process, can be an effective way to increase the tannin content of wine. However, the impact of crushing berries on tannin extraction is not as clear-cut, and may vary depending on the grape variety.

Questions

• What are the factors that affect tannin extraction?
• What is saignee, and how does it affect tannin extraction?
• Does crushing berries affect tannin extraction?

Answers

• The factors that affect tannin extraction include maceration time, ethanol content, and the interaction of tannins with other components in the wine.
• Saignee is a method of bleeding off some of the juice early in the fermentation process. This can increase the tannin content of the wine by concentrating the tannins in the remaining juice.
• The impact of crushing berries on tannin extraction is not as clear-cut, and may vary depending on the grape variety. Some studies have shown that crushing berries can increase tannin extraction, while others have shown no effect.