In the US pizza's have officially been declared vegetables. Apparently because there is so much tomato in it.
The funny thing is, a tomato is a fruit.
http://www.washingtonpost.com/blogs/...gmhN_blog.html
you cannot even classify the whole pizza in that manner because it is made up of ingredients.
that the pizza contains may be vegetables(or fruit) but the pizza itself cannot be anything other than just a mixture of ingredients.