Frog cake 2001 the frog cake was listed as a South Australian Heritage Icon by the National Trust of South Australia. The frog cake is a small dessert shaped to resemble a frog with its mouth open, consisting of a sponge base with a jam centre, topped in artificial cream and covered with a thick layer of fondant icing. The recipe today remains identical to the one employed when the cake was first produced in the 1920s. When manufactured, large layers of sponge cake are combined and cut mechanically into shape, covered in the fondant, and the mouth is then formed with
National Bakery School Students' Society celebrated it Diamond Jubilee with a sherry party held at the Borough Polytechnic's Edric Hall. In that same year the Lord Mayor of London was presented with special pieces of bread made by students of the Department, which were delivered by hand cart to Mansion House, where the Mayor and Lady Mayoress received students for afternoon tea. From 1969 the National Bakery School moved to purpose built accommodation within new extension buildings of the then Polytechnic of the South Bank, which were opened by the Duke of Edinburgh. In 1989 the School yet again baked a cake for