Very easy. Prep. 20min. Rest 3hours
In a sauce pan, break the chocolate in pieces and butter. Let in melt on low heat.
Separate in two different bowls white and egg yolks.
In 1 bowl, mix the yolks with powdered sugar. Add the choc-butter mixture and mix everything.
In the other bowl, whisk the egg white with a bit of salt. And slowly pour into the choc-butter mixture.
Cover up with a plastic film and let it rest for at least 3 hours in the fridge.
What you need
225g of dark chocolate
90gr of butter
1 tablespoon of powdered sugar