Macau's 1,500 restaurants face random checks to stop the sale of smuggled meat and vegetables from the mainland. The move comes after a study of pork consumption by the Leal Senado - similar to Hong Kong's Urban Council. It found that only 450 pigs a day were being eaten by the 450,000 population, suggesting smuggled pork was forming a big chunk of consumption. Under the plan, markets and hawkers will face food stock and paperwork inspections to ensure they are not selling illegal food. Leal Senado Vice-President Antonio Sio said: 'We want to ensure that the quantities which are sold match with the quantity described on the receipts. We will also be checking stocks. 'Every restaurant in Macau will be warned that we are out there investigating. They will not know when we are coming.' Officials will also ask food retailers to detail average monthly sales, so contraband dealings can be pinpointed.