Preheat oven to 175 degrees celcius.
Melt chocolate and butter together.
Beat sugar, brown sugar, and eggs together until pale and doubled.
Add salt & vanilla.
Fold in chocolate mixture.
Sift in flour and cocoa powder and gently fold in, then add chopped chocolate.
Bake for 25-30 minutes—DON'T OVERBAKE or you have failed (not in life, just in making good
brownies).
