Making 6 American Cookies with One Dough

Classic American Cookies (6 pieces, 90-130) unsalted butter 110g brown sugar 100g white sugar 50g eggs 40g egg yolk 15g cake flour 160g baking soda 2g cornstarch 4g dark chocolate 60g white chocolate 40g walnut 60g Hazelnut 40g Double chocolate American Cookies (6 pieces, 90-130) unsalted butter 110g brown sugar 100g white sugar 50g eggs 40g egg yolk 15g cake flour 160g baking soda 2g cornstarch 4g Cocoa powder 15g dark chocolate 60g white chocolate 40g walnut 60g Hazelnut 40g Matcha American Cookies (6 pieces, 90-130) unsalted butter 110g brown sugar 100g white sugar 50g eggs 40g egg yolk 15g cake flour 160g baking soda 2g cornstarch 4g Matcha powder 15g white chocolate 40g Hazelnut 40g Red velvet American Cookies (6 pieces, 90-130) unsalted butter 110g brown sugar 100g white sugar 50g eggs 40g egg yolk 15g cake flour 160g baking soda 2g cornstarch 4g Food color