I just realized that, in Dr. Seuss's Green Eggs and Ham, if you look really closely... the change of heart comes after eating only 1 egg and no ham.
In fact you never see a bite of ham taken, "I WILL eat it with a mouse etc etc " comes after eggs only.
(Only hint is an empty plate on the last page after its over).
What if the eggs had been good, but the ham terrible? That would have been awkward.