Preheat oven to 410 degrees and line two cookie sheets with a silicone baking mat
Using a standing mixer, cream together the butter, brown sugar, and sugar for about 2 minutes or until light and fluffy
Beat in the eggs and the cocoa extract until combined
Using a medium bowl, whisk together the flour, cake flour, cocoa, cornstarch, salt, and baking soda until combined
Gradually mix in the dry ingredients into the wet until a soft dough has formed
Gently fold in the chocolate chips
Using a large cookie scoop, scoop out a mound of dough and place it onto a kitchen scale
Preferably, your cookie dough ball should weigh about 3 - 3.5 oz
Place onto the cookie sheet and lightly press down but not to much
Repeat steps to make 5 more cookies
Place the other 5 cookies onto the cookie sheet about 3-5 in apart incase of spreading
Bake in the oven for about 9 - 12 minutes or until the edges seem firm
Remove and allow to cool for about 10 minutes before enjoying !