In a large bowl, beat the butter with the sugar until creamy. Add the yogurt and vanilla. Mix flour and baking soda in a second bowl. Then add to the butter mixture, mix and finally fold in the chocolate drops.
Preheat the oven to 190 ° C.
Place in portions on a baking sheet with a spoon / ice cream spoon. Bake for 10-15 minutes. Let cool and refine with a little sea salt.
If you don't want to bake the cookies straight away, shape the dough into a strand, wrap it in cling film and keep it in the fridge for 1-2 weeks.
Cut into slices before baking and bake at 190 ° C for 10-15 minutes.