BEIJING (Reuters) - The French used grapes, Russians fermented potatoes, Koreans put ginseng in their drink and Mexicans distilled cactus plants to make fiery tequila. Now China is introducing fish wine. Sun Keman, an entrepreneur in the northeastern port city of Dalian, has formed the Dalian Fisherman's Song Maritime Biological Brewery, with a plan to use his background in the fishing industry to make fish into wine. "Different from China's thousands of years of brewing, the brewery will clean, boil, and ferment fish for making wine," the official Xinhua news agency reported. The company already had orders from Japan, Russia...