How to feed 20,000 people in one sitting

"Karsten Gottschalk. He's the executive chef at the Armed Forces Officers Club & Hotel in Abu Dhabi, and it's his busiest time of year. Gottschalk's job during Ramadan is to feed at least 20,000 people every day....The Sheikh Zayed Grand Mosque commissions Gottschalk's kitchen to prepare meals for people to break their fast at the mosque. Gottschalk leads a 500-strong team in the kitchen, and cooking starts at 6 a.m. During the working day, 7,000 kilos of vegetables are peeled and diced, 5,000 kilos of rice boiled in vast pots and 10,000 chickens cut in two and roasted."