Asia's biggest per capita alcohol consumers are South Koreans and they can now soothe themselves after a big night out with hangover-fighting ice cream.A convenience store chain has launched the product whose name in English translates to “hang in there”.According to the company, it is the first ice cream bar marketed specifically to combat the after-effects of alcohol consumption. Hangover cures in South Korea generate roughly $126 million in annual sales, according to industry data, including pills, beverages and cosmetics.