Well, it looks like an ancient shipwreck dating back to the Roman Republic had a cargo hold full of olive oil.
But not just any olive oil. Oh no! This stuff was flavored with oregano.
Salad dressing, anyone?
According to LiveScience, the 2,400-year-old shipwreck was found in the Aegean Sea off the coast of the Greek islands. Jars, called amphoras, were found on board.
When the salvaged amphoras where analyzed, it was discovered that the DNA contents of one of the amphoras was olives and oregano.
Why the oregano?
It may have been used to help preserve the olive oil. Or, of course, it certainly could be there to flavor the oil.
Apparently, they knew what was healthy even back then!
(Interesting side note - apparently, olive oil is not the only thing that goes way back. According to a National Geographic article I learned about at Slashfood, chocolate was discovered 3,000 years ago by accident by Central American Indians making beer. All I can say is thank goodness!)