Long-life and frozen foods will have to carry 'best before' labels from June under regulations to be gazetted tomorrow. The Health Department said all pre-packaged deep-frozen food and pre-packaged food that could retain its quality for more than 18 months would have to bear the 'best before' date. A department spokesman said 12 complaints were received from consumers last year about products which did not carry the dates. Regulation changes in 1996 forced all pre-packed foods to carry manufacture and 'best before' dates. But frozen and long-life foods were exempt under a grace period which expires on June 1. 'They were exempt as retailers said they needed a long period of time to sell off their stocks of these products,' the spokesman said. Those who do not comply face six months' jail and a $50,000 fine. Consumer Council head of research Connie Lau Yin-hing welcomed the move but said the Government was still not addressing full labelling of all products. 'Some people may be allergic to some additives so all ingredients should be spelled out on the label,' Ms Lau said. She said this was particularly pertinent for genetically modified food.