Preheat oven at 180 degrees

Separate the egg whites n yolk

Whisk the egg whites until they form still peak.

Add in the yolks one at a time as you beat.

Add the essence

Add sugar a tablespoon at a time to avoid deflating the mixture.

Sift the flour n cocoa. Fold in gently with a spatula

Pour the batter in a greased baking tin and bake for 35-45 mins at 180 degrees.