In a deep bowl, add the flour. Then, incorporate sugar, salt, baking soda, cocoa powder, and vanilla sugar.

For the best results, it’s advisable to sift the flour and cocoa powder beforehand to remove any lumps.

If you prefer, you can substitute vanilla sugar with vanilla essence but be sure to add it at the end of the biscuit preparation along with the other liquid ingredients.

To achieve a rich color and an incredible chocolate aroma, I recommend using alkalized cocoa powder instead of regular cocoa powder. Baked goods made with alkalized cocoa are simply delightful! You can find this type of cocoa in large hypermarkets, confectionery shops, or order it online. If you can’t get your hands on alkalized cocoa, don’t worry—regular cocoa will work just fine. The cake might turn out lighter in color, but it will be equally delicious.