As always, curiosity drove me to do some research. What I discovered was astonishing: the frog cake is a South Australia Heritage icon, listed by the National Trust of South Australia in 2001. Talk about missing a cultural reference!
Frog cake is served for dessert. It is a small cake shaped like a frog’s head, made from sponge cake, jam, and cream with a fondant covering. Balfours Bakery, an Adelaide institution, created the frog cake in 1922 when tea rooms were still very popular. The inspiration reportedly came when a member of the Balfour family visited a confectionary in France. Frog cakes were originally covered in green fondant, but brown and pink versions were introduced later.