Place the sugar and butter at room temperature in a bowl.

Beat with a mixer on low speed until smooth.

Add the egg and vanilla sugar, and continue beating with the mixer.

Add the salt.

Mix half a teaspoon of baking soda with the flour.

Add the flour to the mixture and mix until smooth.

Finely chop 80% of a whole bar of dark chocolate.

Add the chocolate to the mixture and stir with a spoon or spatula.

Pour a little water into a deep plate to soak your hands so that you can shape the cookies into balls. Dip your hands in the water for each ball.

Preheat the oven to 180°C. Place the biscuits apart from each other, as they will increase in volume during baking. Bake for 10-12 minutes.

The cookies are ready.

Enjoy!