Quote from : The Devil's Cup: A History of the World According to Coffee Book

Beer for breakfast, ale for lunch, stout with dinner and a few mugs in between. The average Northern European, including women and children drank three liters of beer a day. That's almost two six-packs, but often the beer had a much higher alcoholic content. People in positions of power, like the police, drank much more. Finnish soldiers were given a ration of five liters of strong ale a day (about as much as seven six-packs). Monks in Sussex made do with 12 cans worth.