By Tom Mueller,
On August 10, 1991, a rusty tanker called the Mazal II docked at the industrial port of Ordu, in Turkey, and pumped twenty-two hundred tons of hazelnut oil into its hold. The ship then embarked on a meandering voyage through the Mediterranean and the North Sea. By September 21st, when the Mazal II reached Barletta, a port in Puglia, in southern Italy, its cargo had become, on the ship’s official documents, Greek olive oil. It slipped through customs, possibly with the connivance of an official, was piped into tanker trucks, and was delivered to the refinery of Riolio, an Italian olive-oil producer based in Barletta. There it was sold—in some instances blended with real olive oil—to Riolio customers.