Preheat your oven to 350 degrees F. Grease an 8x8 pan and line with parchment paper. Leave a bit of an overhang to be able to lift the brownies out of the dish.

Place flour and salt in a small bowl, combine, and set aside. 

In another bowl, crack your eggs and whisk them, then add your sugars but mix just to combine them. Do not over mix. 

In a large bowl, melt your butter halfway. Then remove it from the heat or microwave and stir in your 6 oz of coarsely chopped chocolate. Stir till the bits are all melted and glossy. If you have small bits after stirring for a few minutes, then place your butter/chocolate mixture in the microwave at half power and heat for 20 seconds. Remove it and continue stirring till all the chocolate is melted. 

Pour your egg mixture in with the chocolate and mix slightly. Do not over mix. Add the flour and salt till everything is just combined and then fold in the roughly chopped chocolate bits. 

Pour your batter into your dish and cook for 35 minutes or until a toothpick comes out with wet crumbs on it. Let it sit and cool for at least an hour before cutting.