Potato
Miley is white and probably something else inside but outside shes white.
Dirty Diaper: white outside and black inside.
egg
a frog sandwich
no, the egg yolk is just the yolk. and the egg white is just the white
A potato
news paper
A watermelon.
frog sandwhich
A potato
With: White blood cells, fluid, medicine...thats all I know.
The answer to this riddle is "Campbell's Cream of Elephant Soup".