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Smaller portions

At Quanjude Group, one of China's biggest restaurant chains, cards written in red print remind customers to order sparingly, while also pointing out that they are encouraged to take leftovers home to eat later. To discourage customers from ordering more than they can eat, the group has started to use smaller serving plates for portions. The new plates are roughly half the size than before and hold half the amount of food. Prices have also been altered to suit.

The campaign has also attracted large numbers of young people. In January, a proposal initiated on the micro blog service Weibo calling on Beijing residents to eat everything on their plate attracted the participation of 2.74 million people within the first two weeks.

Liu Qinglong, a professor at Tsinghua University's School of Public Policy and Management, was happy to see the change in attitude toward food wastage, but he said he's waiting to see how things pan out over the long term. He expressed concern that the new move may be short-lived and will fade away in the face of traditional cultural pressures.

"Ostentation and preserving face have been part of Chinese culture for thousands of years," he said, pointing out that people don't like to be seen taking food home from restaurants for fear that neighbors and friends may think them stingy or poverty stricken.

He suggested the government should introduce a media and social supervision mechanism to combat these perceptions, while also advocating the establishment of a special office to oversee payments made with public funds.

"Without effective and detailed implementation, the phenomenon will not last long," said Liu.

Although research by China Agricultural University in 2008 estimated that 50 million metric tons of food - one-tenth of China's total grain output - is wasted every year, the problem is equally, if not more, acute in industrialized countries and the phenomenon can be observed in almost every developed nation.

Roughly one-third of the food produced in the world for human consumption every year - approximately 1.3 billion metric tons - is wasted, according to a study commissioned by the United Nations' Food and Agriculture Organization.

China Daily examined the situations in the United Kingdom and the United States to see how those countries fare and how they intend to change their situations.