Recipe of the “chocolate mousse” for 4 persons:
-200g of 70% dark chocolate
-20g of salted butter
Recipe “a little firmer”:
-250g of 70% dark chocolate
-10g of salted butter
-20g of cocoa butter
In any case, this is the process.
Melt chocolate and butter (salted or cocoa) in microwave or double boiler. Adding a little butter will help the chocolate not to harden immediately with the addition of the egg yolk. And in the case of cocoa butter, to freeze the foam a little more.