Chocolate sponge cake and ganache

I had not attempted baking sponge cake since secondary 2 until this afternoon. After remembering how tiring to whisk the eggs and producing charred sponge cake during my secondary 2 Home Economics test, I only started toying with the idea of baking it recently. I like the light cake and when I saw a simple recipe on Guardian online, I used a few hours this afternoon to whisk the egg yolks and whites separately until arms ached :) it was therapeutic. The chocolate ganache helps to make the cake look pretty and taste more interesting due to the turbinado sugar and fine salt I sprinkled on top.