Wilmar is one of the three operators selected by the Education Ministry to cater canteen food as part of its new central kitchen model scheme. SINGAPORE: Hours before the first school bell rings, preparations for recess have already begun at an industrial building in Tuas. Inside a kitchen as large as a football field, workers begin cooking the day’s dishes in industrial-sized vats. It is almost 5am and at least 1,000 meals must go out by 7am. “Time is of the essence to keep the food fresh,”