There is a big difference between "classic" and "classical." A classic is something that has achieved a universally recoginzed status, either for its intrinsic excellence or for typifying a genre. A classical work, on the other hand, is one that is either from the classical period or one that has the characterisitcs of that period and its predominant styles.

For instance, Tchaikovsky's Violin Concerto is a solid classic, but there is nothing classical about it. Mozart's early piano concerti are all classical, but they cannot be counted among the true classics, like his 20th Concerto. Homer's Ilyad is both classical and a classic.

I doubt very much if the writer of this restaurant menu could tell the difference, but I thought to clarify the issue.