Melt the chocolate and the butter together
Wisk the eggs for 10 mins very well
Add the sugar to the egg mixture and keep wisking until it turn creamy then add espresso coffe to the mixture
Let the butter and chocolate cool then add them to the egg mixture
add the flour and cocoa powder to the mixture
Add the mixture to a pan with parchment paper then add the chocolte chips then add pinch of sea salt on top
Bake it for 35- 40 mins.