The East Coast Bakehouse was an ambitious start-up when it launched in 2015.  Neither a technology nor a services company, it set out to build a biscuit manufacturing facility in Drogheda, Co Louth – an uncommon and bold move – and went on to become one of the largest food manufacturing start-ups of the past decade.  It’s the only commercial-scale biscuit manufacturer on the island of Ireland, and one of the most modern and expansive in Europe. Shop in Lidl, Aldi, Tesco or Dunnes and you might have seen its own-brand cookies. Fly with United Airlines, another key customer, and…