'Creme Eggs are manufactured by making a chocolate shell in a half-egg shaped mould, which is then filled with white fondant and a dab of yellow fondant to simulate the yolk. Two mould halves are closed very quickly and cooled to allow the chocolate to set. When the moulds are opened, the eggs fall onto a conveyor which transports them, first to the foiling machines and then to the finished packing'. - so it says at the Wikipedia site . .