It's CHOCOLATE. Chocolate is the only acceptable answer.
It's a vegetable (after all, it is made from the cacao bean, and beans are vegetables).
It's a fruit (because fruits grow above ground, and cacao grows above ground). And it says so in
The Story of Chocolate.
It has a wee bit of PROTEIN, just like meat.
It has some CARBS.
If you eat milk chocolate, it counts as a dairy.
And it makes women happy.
Therefore, if the women are happy, everybody is happy.
Keep the women happy with chocolate (and some wine), and you will be happy.
Therefore, chocolate is the perfect food.