Associated with Anzac Day on April 25, the biscuit is a crunchy commemoration of the members of the Australian and New Zealand Army Corps (ANZAC) who fought in World War I. It's Australian food with a back story.The Anzac biscuit was made by wives during the war and sent to soldiers, because the basic ingredients (rolled oats, flour, sugar, desiccated coconut, golden syrup, butter, bicarbonate of soda and water) were able to keep for a long time, even on long boat journeys.