Bill's Brownies

3/4 cup cocoa powder
227 grams butter (2 sticks)
4 eggs
2 teaspoons vanilla
2 1/2 cups sugar
2 1/2 cups flour
1/2 teaspoon salt
1 teaspoon baking powder (optional, for more cake-like brownies)

Oven 177*.
Melt cocoa and together, cool.
Beat eggs, sugar and vanilla together.
Add cocoa mix.
Add flour, salt and baking powder mix.
Bake 20-25 minutes.