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Some drinkers reported that when they were drinking wine, they found some crystalline precipitates in the wine bottle, which made people wonder whether the wine could be drunk or whether it had changed, otherwise, where did these "impurities" come from? ? The appearance of "sediment" in wine is a very normal phenomenon, which not only has no effect on the flavor of the wine.

It can also be used as a sign of quality. Let’s talk about the "sediments" in wine in detail. What are "sediments"? Let us first understand what these sediments are. Generally speaking, they are composed of tartaric acid, Tannins, natural pigments and other substances are composed of natural deposits such as peels, fruit stems, fruit purees or wood chips.

Tartaric acid is a natural organic acid contained in grape raw materials. It is the source of wine acidity and one of the foundations of wine flavor. It crystallizes at low temperatures and even aggregates into pieces, or attaches to corks to form "diamond crystals". It is awkward to see white in white wine, and purple-red in red wine.

Old wine that has been aged for many years will also show dark flake-like precipitation. During the aging process, the pigments and tannins in the wine separate to form this precipitate, which is the crystallization of various complex flavors in the wine and can be used as a sign of aging wine. However, this kind of sediment is not unique to aging wines. Some red wines with mellow style, such as Bordeaux, Cabernet Sauvignon, Syrah in hot vintages, etc. may also show this kind of sedimentation.