In a busy factory in Longford, a small team thinks it has found a simpler way to feed thousands of teenagers; quickly, cheaply and with far more choice. Next stop: the UK and the United States. Walk into Food Village’s production hub on a weekday morning and the first thing you notice is the line. A 40-metre conveyor snakes past fridges, prep benches and packing stations. Staff work in a steady rhythm. Each basket on the belt is a single student’s lunch, already chosen on an app or a school kiosk. There are hot mains made earlier in the day,…