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The press wine is blended with the free run wine at the winemaker's discretion. The wine is then kept warm and the remaining sugars are converted into alcohol and carbon dioxide. The next process in the making of red wine is malolactic conversion , a bacterial process which converts "crisp, green apple" malic acid to "soft, creamy" lactic acid ...
The natural occurrence of fermentation means it was probably first observed long ago by humans. [3] The earliest uses of the word "fermentation" in relation to winemaking was in reference to the apparent "boiling" within the must that came from the anaerobic reaction of the yeast to the sugars in the grape juice and the release of carbon dioxide.
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Wine packaged in a bag usually made of flexible plastic and protected by a box, usually made of cardboard. The bag is sealed by a simple plastic tap. Brettanomyces A wine spoilage yeast that produces taints in wine commonly described as barnyard or band-aids. Brix/Balling A measurement of the dissolved sucrose level in a wine Brouillis
In surface filtration, the wine passes through a thin membrane. Running the wine parallel to the filter surface, known as cross-flow filtration, will minimize the filter clogging. The finest surface filtration, microfiltration, can sterilize the wine by trapping all yeast and, optionally, bacteria, and so is often done immediately prior to ...
A wine-maker may be trained as an oenologist, but often hires one as a consultant Sommelier: Also called a "wine steward", this is a specialist wine expert in charge of developing a restaurant's wine list, educating the staff about wine, and assisting customers with their selections (especially food–wine pairings) Vintner or winemaker
Wine press – device used to extract juice from crushed grapes during wine making. History of the wine press; Must – freshly pressed fruit juice (usually grape juice) that contains the skins, seeds, and stems of the fruit. Pomace – solid remains of grapes, olives, or other fruit after pressing for juice or oil. It contains the skins, pulp ...
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 ...