There was a tense moment at the G20 leaders' barbecue on Saturday when U.S. President Barack Obama stood up suddenly. Brisbane chef Ben O'Donoghue, who catered the event, said the organisers had eyes on Mr Obama and they started speaking into their earpieces as soon as he left his table. 'They were saying "The President's on the move, the President's on the move",' Mr O'Donoghue told Daily Mail Australia. 'Which then changed to "Oh, stand down, he's just going back to the buffet".' Scroll down for video Brisbane chef Ben O'Donoghue (right) serves Prime Minister Tony Abbott at the Leaders' Retreat Barbecue
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World leaders treated to a 'laid back' barbecue at the G20 on Saturday
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Brisbane chef Ben O'Donoghue served guests a buffet-style lunch
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Barack Obama came back for seconds and Vladimir Putin spent the whole event chatting with other leaders
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Leaders were served dishes including barbecued new season asparagus with peas and goats curd and freshly shucked Moreton Bay rock oysters
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