Devilish chocolate and salted caramel cake

Last weekend we tried a recipe from Marmiton website - the Gateau au chocolat et au caramel salé. It was so moist and you could taste a well balanced mixture of chocolate, caramel and salt. A delicious cake that melts in the mouth and so terrible for the diet!!!! Of course it reminded us of "caramel au beurre salé" - salted caramel recipes from Brittany.

Here's the recipe, very simple one that I'm translating here from the original website.

Ingredients
200g dark chocolate
180g sugar
150g salted butter
4 eggs

Note: except for the egg whites, all these mixing and beating steps are done manually with a whip or spoon.
Make a caramel with the sugar and a tablespoon of water.
When it's done, take the pan from the heat, add salted butter and mix until the caramel becomes liquid.
Add the chocolate that you have cut into pieces beforehand. Mix well
Separate the egg white and yolk and beat the whites to stiff
Add one egg yolk at a time to the chocolate mixture and mix
Incorporate gently the beaten whites to the chocolate mixture
Put in a greased mould and cook in a preheated oven for 25 minutes, 180 degrees
Enjoy while it's warm...miam...

our pictures before eating a very unreasonable share of the cake: