Acids in wine ripened grapes. While concentration varies among grape varieties, it is usually found in higher levels with red wine grapes. The acid is created as a byproduct of the metabolization of nitrogen by yeast cells during fermentation. The combination of succinic acid with one molecule of ethanol will create the ester mono-ethyl succinate responsible for a mild, fruit aroma in wines. Acidity is highest in wine grapes just before the start of "veraison", which ushers in the ripening period of the annual cycle of grape vines. As the grapes ripen, their sugar levels increase and their acidity levels decrease. Through the
Wine from the United Kingdom jelly. The term British wine is used to describe a drink made in Britain by the fermentation of grape (or any other fruit) juice or concentrate originating from anywhere in the world. It cannot be used for :wine in the legal sense, which must be produced from freshly pressed grapes. The most common style is a medium or sweet high-strength wine that is similar to sherry, and was formerly known as British Sherry. The Romans introduced winemaking to England, and even tried to grow grapes as far north as Lincolnshire. Winemaking continued at least down to the time of the