My buddy did a white chocolate stout and melted about 1lb of white chocolate in a pan, and then poured that into his carboy. he then quickly swirled the chocolate around in the carboy creating a nice thin layer on the bottom and almost 1/4 way up the carboy. he then transferred his wort into that carboy for primary fermentation. The final product had lil pieces of white chocolate particulate suspended in the beer. Very tasty!!