Brownies!

Unfortunatelly I do not have "during preparation" pictures, but just some pics of the end result. Anyhow, lets start:
Ingredients:
140 grams semisweet or bittersweet chocolate, chopped
120 grams unsalted butter, cut into pieces
15 grams cocoa powder
200 grams granulated white sugar
1 teaspoon pure vanilla extract
3 large eggs
100 grams all-purpose flour
1/4 teaspoon salt
125 grams semi-sweet chocolate chips (optional)


Preheat oven to 180 degrees.
Rack in the center of the oven.
Butter a 20cm pan ( or use the untistick spray )
Melt the chocolate and butter at "bagnomaria".
Remove from heat and add in the cocoa powder and sugar .
Whisk in the vanilla extract and eggs.
Add in the flour, salt and chocolate chips.
Pour into the buttered pan and bake for about 20-25 minutes, check with a toothpick inserted in the center , if it comes out with a little batter and a few moist clumps clinging to it. Be carefull not to overbake it. Brownies must be soft and with a bit of moisture inside. Remove from oven and let cool.
Serve warm or chilled, best if with a side of vanilla ice-cream !