I've brewed my first batch of oatmeal stout - only a smaller, 3-gallon batch. I also purchased enough grains to do a regular 5-gallon batch. We're brewing that today and my plan is to move it to secondary so I can add additional flavor.
I'd like to focus more on a light chocolate and coffee flavor for this stout. What type of chocolate is proper to add, and what is the proper way to add coffee (grinds, add a cup after brewing, etc.)?
Any tips or suggestions greatly appreciated.