How Racking Works
Using gravity or a gentle pump, wine is carefully moved from one barrel or tank to another, leaving the settled lees behind. The process is typically repeated 2-4 times during aging, at intervals of several months.
Purpose of Racking
- Clarification — removes dead yeast, grape particles, and other solids
- Aeration — controlled oxygen exposure helps tannins integrate and reduces reductive aromas
- Stability — separating wine from decomposing lees prevents off-flavours
Racking Styles by Region
In Bordeaux, wines are racked every 3 months during barrel aging. In Burgundy, gentler handling means less frequent racking to preserve delicacy. Some natural winemakers avoid racking entirely, embracing the character lees contact provides.
Alternatives to Racking
Modern winemakers may use filtration or centrifugation instead of — or in addition to — racking. However, traditional racking remains the preferred method for premium wines, as it is gentler and allows the winemaker to taste and assess the wine at each stage.