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Wine grapes from the Guadalupe Valley in Ensenada, Baja California, Mexico. Winemaking, wine-making, or vinification is the production of wine, starting with the selection of the fruit, its fermentation into alcohol, and the bottling of the finished liquid. The history of wine-making stretches over millennia.
Wine is a complex mixture of chemical compounds in a hydro-alcoholic solution with a pH around 4. The chemistry of wine and its resultant quality depend on achieving a balance between three aspects of the berries used to make the wine: their sugar content, acidity and the presence of secondary compounds.
A risk factor involved with fermentation is the development of chemical residue and spoilage which can be corrected with the addition of sulfur dioxide (SO 2), although excess SO 2 can lead to a wine fault. A winemaker who wishes to make a wine with high levels of residual sugar (like a dessert wine) may stop fermentation early either by ...
The art and science of making wine. Also called enology (or oenology). Not to be confused with viticulture. Vinification The process of making grape juice into wine. Vin jaune French for "yellow wine", a wine fermented and matured under a yeast film that protects it, similar to the flor in Sherry production. Vinimatic
Peter Liem – American wine writer in Champagne, publisher of ChampagneGuide.net; Will Lyons – British wine columnist for The Wall Street Journal; Natalie MacLean – Canadian wine writer and subscription website publisher; Karen MacNeil – American author, journalist and wine educator; Neal Martin – reviewer for The Wine Advocate
Malolactic fermentation can aid in making a wine "microbiologically stable" in that the lactic acid bacteria consume many of the leftover nutrients that other spoilage microbes could use to develop wine faults. However, it can also make the wine slightly "unstable" due to the rise in pH, especially if the wine already was at the high end of ...