Lees

/LEEZ/

Dead yeast cells and grape solids that settle after fermentation.

Full Definition

Lees are sediment consisting of dead yeast cells, grape particles, and tartrates that settle after fermentation. Fine lees are smaller particles; gross lees are larger. Aging on lees (sur lie) adds texture, complexity, and protection from oxidation. Lees stirring (batonnage) enhances these effects.