What you need

275g butter
8 eggs
1 pinch of salt
135g powdered sugar
135g granulated sugar
275g flour
1 pack baking powder
1 pack vanilla sugar
1 pinch of saffron

Preparation

Preheat oven to 180°C (350°F) using top/bottom heat. Grease and dust a baking tray approximately 40x25cm. I use clarified butter and breadcrumbs. Butter and flour will also work.
Separate eggs into whites and yolks.

preparation

Mix butter, powdered sugar and egg yolks and beat until fluffy.
Beat egg whites, salt and granulated sugar until stiff peaks form.
Combine the flour, saffron, vanilla powder, and baking powder. Gradually and carefully fold the egg white and flour mixture into the beaten egg whites using a spatula.

Spread the batter into the cake tin and bake at 170g for 20-30 minutes.