User blog comment:Xilinoc/Realistic One Piece/@comment-24769684-20150525202904/@comment-24.235.56.170-20150526015357

And I don't believe that Brook actually needs to eat. Since it's his "soul" and the power of his fruit keeping him alive, he shouldn't need to breathe, eat, sleep, or really do anything that a normal human would. I never really understood how all the gas attacks worked on him on PH, since he doesn't have any lungs. (Yohohoho!)

The milk thing wouldn't help him at all though, and he'd fall to pieces in no time.