Add 50 gr. of butter to a microwave prof bowl.
Add the chocolate in pieces.
Heat in the microwave for 1 min.
Stir and check if the chocolate is all melt.
If not take to the microwave for 20 seconds
Add the condensed milk. And stir.
Add the yellows to the chocolate mix.
Keep the whites in a different bowl.
Stir and mix it together.
Mix the whites.
Until they are thick.
Mix all together.