"A winemaker or vintner is a person engaged in winemaking. They are generally employed by wineries or wine companies, where their work includes:
Cooperating with viticulturistsMonitoring the ...
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maturity of grapes to ensure their quality and to determine the correct time for harvestCrushing and pressing grapesMonitoring the settling of juice and the fermentation of grape materialFiltering the wine to remove remaining solidsTesting the quality of wine by tastingPlacing filtered wine in casks or tanks for storage and maturationPreparing plans for bottling wine once it has maturedMaking sure that quality is maintained when the wine is bottledToday, these duties require an increasing amount of scientific knowledge, since laboratory tests are gradually supplementing or replacing traditional methods. Winemakers can also be referred to as oenologists as they study oenology – the science of wine." - (en.wikipedia.org 07.03.2020)