Frog cake of the first items to be selected as a South Australian Icon by the National Trust of South Australia during the 165th anniversary of the state, adding the frog cake to the National Heritage Listing as a "movable asset". Historically, the frog cake has sold well for Balfours, and at times sales have peaked in response to events surrounding the company. When the company was placed into receivership in 2000, a column in "The Advertiser" by Rex Jory called for people to support the company by purchasing the cakes, and in response sales doubled to an "all-time high". Similarly, the
Cake baking process. Sponge cakes, leavened with beaten eggs, originated during the Renaissance, possibly in Spain. During the Great Depression, there was a surplus of molasses and the need to provide easily made food to millions of economically depressed people in the United States. One company patented a cake-bread mix in order to deal with this economic situation, and thereby established the first line of cake in a box. In so doing, cake as it is known today became a mass-produced good rather than a home- or bakery-made specialty. Later, during the post-war boom, other American companies (notably General Mills) developed