Beat the butter and sugar in a mixer for about 5 minutes until the mixture becomes a little lighter.

In another bowl, mix flour, cocoa, baking soda and salt.

Mix in the butter-sugar mixture. Don't stir for too long.

Chop the couverture or use ready-made chocolate drops. Fold in the chocolate and form 16 cookies with an ice cream scoop.

The dough balls can now either be baked directly or frozen and baked as required.

Preheat the oven to 180°C and bake the cookies for 12-15 minutes. If using frozen batter, the baking time will increase by approximately 5 minutes.

The cookies are still very soft when they come out of the oven. Leave to cool completely on the baking sheet for 5 minutes and then on a wire rack.