Preheat the oven at 350F (180C).
Use a silicone pound cake mold or a regular mold, buttered and lightly floured, you can put a little piece of parchment paper at the bottom.
Weight the eggs, WITH the sells.
In the bowl of a stand mixer, mix the eggs with the sugar at maximum speed, until it doubles in volume and becomes a pale yellow, about 3-4 minutes.
Stir in the flour.
Stir in the melted butter.
If you choose one of the options, now it's time to stir it in!
Poor in to your mold.Using a wooden spoon, trace a line on top of your batter.
Bake for around 50 minutes, until a tooth pick come out clean.
