Using your definition of pie, I will add the definition of fruit. " fruit is a part of a flowering plant that derives from specific tissues of the flower, one or more ovaries, and in some cases accessory tissues."
Chocolate, therefore, does not come from a can of Nestle's Quick, it comes from a flowering, fruit-bearing botanical life form--chocolate is fruit.
How long until camp starts?
The cacoa plant produces fruit. We use the cocoa beans inside the fruit to create chocolate. I guess you're right.