First melt the chocolate. Put the eggs in a bowl along with sugar and mix, stir until creamy. Stir in the oil, and then add the flour, cocoa and a pinch of salt and mix until smooth. Pour in the chocolate (make sure it's not hot.) And stir.
Then help yourself with two spoons and spread 1 teaspoon of the batter on the baking paper. (you can also pipe with a dressing bag) Leave some space between the cookies as they spread out a bit. If necessary, use a spoon to adjust in the shape of a circle.
Bake in a preheated oven at 180 degrees Celsius for 11 minutes to crack nicely. Cool the cookies to harden and then take them off of baking paper, sprinkle with salt and serve.