Term for grape must obtained from grapes by various mechanical methods (not to be confused with grape juice produced by further treatment). Strictly speaking, however, a distinction must be made between the free-run must must obtained by automatic draining and the pressed must obtained by subsequent pressing. The composition of the must and its ingredients are of great importance for the quality of the subsequent wine. Due to the sugar and other nutrients it contains, must is a very good breeding ground for yeasts and bacteria. Without appropriate measures such as pasteurisation or filtration, fermentation sets in very quickly. The must is heavily enriched with carbon dioxide and therefore foams with a corresponding noise development. The ingredients also determine the necessary must treatment steps. The unit of measurement for expressing the Relative Dichterelative...
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Thorsten Rahn
Restaurantleiter, Sommelier, Weindozent und Autor; Dresden