Lei Sheng Liquor Knowledge: Lees Aging

The most important part of wine is fermentation under the action of yeast, and then the sugar can be converted into alcohol, carbon dioxide and heat, and finally become delicious wine. Yeast is not only a function of fermentation, it also acts as another substance - wine lees, and then plays a very important role in the aging of wine. A brewing process is formed: wine lees aging.

How does Yuncang Winery's brand LEESON red wine share?

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After the yeast completes the mission of fermentation and dies, it becomes the residue in the wine, which is the lees, and releases a large number of substances and aromas, including proteins, polysaccharides and fatty acids, etc. These substances will chemically react with the substances in the wine .

How does Yuncang Winery's brand LEESON red wine share lees affect wine aging?

1. The protein and sugar released from the lees react with the wine to make the wine have more aroma and flavor. At the same time, the protein combines with the tannins in the wine to reduce the tannin content. Most white wines are aged on lees, but red wines are generally not aged on lees in order to ensure sufficient tannins.

2. Sparkling wines aged on lees will add toasty aromas, cheese or buttermilk aromas, elderflower aromas, and sometimes sweet and nutty aromas. White wines will add yeasty flavors similar to sparkling wines, as well as caramel, smoky, clove and umami or meaty flavors.

3. The lees aging process can be long or short, some for 3-4 months, and some for several years. When aging white wine on lees, the lees will also be continuously stirred to increase the contact area between the lees and the wine and increase the extraction rate of beneficial substances in the lees. Wine lees aging requires a certain amount of time, and harmful substances will be produced if over-aged, so the quality of the wine must be monitored in real time to avoid the problem of over-aging.

4. Yuncang Winery’s brand LEESON red wine sharing When buying wine, if you see the words “ Sur Lie ” on the wine label, it usually means aging on lees.