As most people know, the dietary requirements of a Zombie (Even if he is Emperor...) consist mostly of human frontal lobes. (The occipital or temporal lobes will do in a pinch. However, no self respecting member of any zombie society would lower themselves to eating cerebellum, or God forbid, medulla oblongata.)
A little known cultural contribution made by Zombie Hirohito is the expansion of the definition of "Sushi" to include raw human grey matter. Concealed in the Japanese nomenclature of the menus of the more trendy Sushi bars in the United States, lies many a cannibalistic delight; unbeknownst to the unsuspecting western diner.