During both world wars, the United Kingdom depended on imports to feed its people. German ships did all they could to interfere with that process. Short (or non-existent) supplies of commodities, deemed essential in peacetime, mandated rationing.
Although the United States relied on voluntary rationing of food in World War I, the country had to take a different path in the Second World War. In the summer of 1941, even before America entered the war, the Office of Price Administration (OPA) was established to administer price controls. The process required a huge administrative effort. Eight thousand rationing boards were created with 200,000 volunteers assisting 60,000 agency employees. Food rationing included restrictions on sugar and meat; clothing rationing restricted silk and nylon.
WWII Ration Books were issued in many countries:
From standing in line at the War Ration Board in New Orleans to purchasing a limited number of eggs in England, families everywhere had to make do with less. Australian propaganda posters, urging people to conserve and follow rationing guidelines, were similar to those in America. New Zealands lack of gas and coal required mothers to prepare food in unusual ways. In Canada, individuals were limited to a half-pound of sugar per week.
Everyone in the family had a ration book which was used to benefit the whole family. Since points were tallied for every purchase of rationed food, when Mom went to the store the operative question was: "How many points will it take to buy this?"
Sometimes folks did not adhere to the WWII motto: "I pay no more than ceiling prices...I pay my ration points in full." Sometimes shoppers and merchants did what they could to avoid the stringent requirements. A Quick-time video clip, from the University of Nebraska, depicts such scenes.
Not only did the government ration food - horsemeat was exempt and Spam, invented in 1937, was a morale booster - people were asked to recycle all kinds of used materials. Women even turned in an item of personal clothing: their nylons. (It took thirty-six pairs to make one parachute.)