a simple cake

A friend who teaches a cooking class for children told me the simplest cake recipe in the world. Weigh 2 eggs shell and all, add the same weight of butter, self-raising flour and sugar and a dash of whatever you fancy, maybe some lemon zest or vanilla essence, and voila you have your cake!

“You wander from room to room
Hunting for the diamond necklace
That is already around your neck!” 
― Rumi