There is no single food that provides all the nutrients that humans need, except for breast milk.
Food Joke
A soldier serving in Asia met this lovely Chinese girl in the park. They ended up having dinner and, that night in the hotel while having sex, the girl let out a very loud fart. The soldier jumped out of the bed to get away from the odor. The embarassed girl looked up at him and said, "Oh, so sorry but, front hole so HAPPY, back hole MUST CHEER."