Ved Vyas's disciple Vaishampayan recited the Mahabharat to king Janmejay and others present there.
Ugrasrava described the dialog between Vaishampayan and king Janmejay and also the stories behind how the dialog took place to the sages (headed by Saunak) in Naimish forest. Then somebody wrote down the dialog between Ugrasrava and the sages - this is the epic that we have now.
So the question is: -
What is the content of the Mahabharat that Ved Vyas composed?