The Daily Express headline 'Salad Days Over' makes use of the term 'salad days' which was originally penned by Shakespeare in Anthony and Cleopatra, referring to a youthful time. However in the modern era it often describes something or someone at its best.  The headline continues with, "... As Price Of Olive Oil Skyrockets":  The story is about how the price of olive oil, which is often used as a salad dressing, has risen, or in other words "skyrocketed".