i didnt know you could by cocoa on amazon.com... nice! i guess i learned something today!*scratches head* well actually i learned what the dutch process cocoa was too.. double wammy!! woot woot*dances around the room*
Dutch processed cocoa is also available at Dean & Deluca. (also the website)
Dutch processed cocoa is simply a purer form of chocolate. It really wont affect your cookies. I have been baking with dutch processed and prefer the taste but, if you like Hersheys cocoa, just use that.
Now there IS a difference in baking with cocoa powder and using unsweeted choco bars. There is a little fat in the the bar choco. Is that what you were asking about?