A sponge cake is a good thing. A duck egg sponge cake is an extra good thing!
Whenever I manage to find duck eggs, which isn’t often at all, I make a sponge cake with them. Duck eggs, which can be a fair bit bigger than regular chicken eggs, give sponge cakes extra lift and height. Plus they often give an intense yellow colour to the sponge thanks to their yolks.
For this cake I used smaller duck eggs (which are similar to the size of jumbo chicken eggs), however if you have larger sized duck eggs you can reduce the amount of eggs you use by one.
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