"In the Middle Ages, however, concerns over purity, medical recommendations and its low prestige of water made it less favored.
Alcoholic beverages were always preferred. They were seen as more nutritious and beneficial to digestion than water, with the invaluable bonus of being less prone to putrefaction due to the alcohol content.
Wine was consumed on a daily basis in most of France and all over the Western Mediterranean wherever grapes were cultivated. Further north it remained the preferred drink of the bourgeoisie and the nobility who could afford it, and far less common among peasants and workers. The drink of commoners in the northern parts of the continent was primarily beer or ale. Because of the difficulty of preserving this beverage for any time (especially before the introduction of hops), it was mostly consumed fresh; it was therefore cloudier and perhaps had a lower alcohol content than the typical modern equivalent.
Plain milk was not consumed by adults except the poor or sick, being reserved for the very young or elderly, and then usually as buttermilk or whey. Fresh milk was overall less common than other dairy products because of the lack of technology to keep it from spoiling.
Juices, as well as wines, of a multitude of fruits and berries had been known at least since Roman antiquity and were still consumed in the Middle Ages: pomegranate, mulberry and blackberry wines, perry, and cider which was especially popular in the north where both apples and pears were plentiful. Medieval drinks that have survived to this day include prunellé from wild plums (modern-day slivovitz), mulberry gin and blackberry wine…"
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