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Solera is a process for aging liquids such as wine, beer, vinegar, and brandy, by fractional blending in such a way that the finished product is a mixture of ages, with the average age gradually increasing as the process continues over many years.
This process also allows the port to breathe (allowing the wine to mix with oxygen). [31] A traditional method of opening a vintage port is with port tongs. The tongs are heated over a flame and applied to the bottle's neck. The bottleneck is cooled with cold water, causing a clean break.
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.
The biochemical process of fermentation itself creates a lot of residual heat which can take the must out of the ideal temperature range for the wine. Typically, white wine is fermented between 18–20 °C (64–68 °F) though a wine maker may choose to use a higher temperature to bring out some of the complexity of the wine.
The typical process involves the addition of alcohol to the must so that the fermentation process is prematurely stopped. Most yeasts die when the alcohol content in their environment is raised to approximately 13–15%. By stopping the fermentation of sugars, a sweet taste of the wine is achieved.
The traditional method for producing sparkling wine is the process used in the Champagne region of France to produce Champagne. It is also the method used in various French regions to produce sparkling wines (not called "Champagne"), in Spain to produce cava , in Portugal to produce Espumante and in Italy to produce Franciacorta .