| Beer has been made by virtually all grain producing countries. The reason for this is probably because barley is a less finicky plant than grapes and will grow faster, in a wider variety of climates and soils. This makes a more reliable crop for conversion to alcohol than would the grape, especially in more northerly climates.
Medieval beer or ale was a cloudy drink, full of proteins and carbohydrates, making it a good source of nutrition for the medieval peasant and nobleman alike. This was a good thing, as it often constituted a considerable portion of the medieval diet, particularly in the lower classes.