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A barrel, often made of oak, used to age wine or distilled spirits. Alcohol. Generally refers to ethanol, a chemical compound found in alcoholic beverages. It is also commonly used to refer to alcoholic beverages in general. Alcoholic fermentation. The conversion by yeast of sugar into alcohol compounds. Aldehyde.
Winepress. A winepress is a device used to extract juice from crushed grapes during winemaking. There are a number of different styles of presses that are used by wine makers but their overall functionality is the same. Each style of press exerts controlled pressure in order to free the juice from the fruit (most often grapes). The pressure ...
Winemaking. 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.
Vinegar (from Old French vyn egre 'sour wine ') is an aqueous solution of acetic acid and trace compounds that may include flavorings. Vinegar typically contains from 5% to 18% acetic acid by volume. [1] Usually, the acetic acid is produced by a double fermentation, converting simple sugars to ethanol using yeast and ethanol to acetic acid ...
Pressing (wine) In winemaking, pressing is the process where juice is extracted from the grapes with the aid of a wine-press, by hand, or even by the weight of the grape berries and clusters. [1] Historically, intact grape clusters were trodden by feet but in most wineries today the grapes are sent through a crusher/destemmer, which removes the ...
The process of fermentation in winemaking turns grape juice into an alcoholic beverage. During fermentation, yeasts transform sugars present in the juice into ethanol and carbon dioxide (as a by-product ). In winemaking, the temperature and speed of fermentation are important considerations as well as the levels of oxygen present in the must at ...
One of the first written accounts of a mechanical wine press was from the 2nd century BC Roman writer Marcus Cato. One of the earliest known Greek wine presses was discovered in Palekastro in Crete and dated to the Mycenaean period (1600–1100 BC). Like most of the earlier presses, it was mainly a stone basin for treading the grapes by feet ...
If grape pressing was used, an estate would press the skins one to three times. Since juice from later pressings would be coarser and more tannic, the third pressing normally made wine of low quality called lora. After pressing, the grape must was stored in large earthenware jars known as dolia. With a capacity of up to several thousand liters ...