The institution of products with protected designation of origin was a decision made by the European Union (EU) to protect the names of products from certain specified areas which are affected by illegal competitors using that name. The inclusion of the Aegina Pistachio as a product of protected designation of origin was ratified by the law P.D. 81/19.3.1993 after an application by the Aegina Agricultural Association after a presentation and proposal by the Farming Management Association of Pireaus, headed by the local agronomist Aristotelis Tekos, while the research into its economic expediency was made by the agronomist Michalis Moutsatsos.
According to the study, the reasons that the Aegina Pistachio was declared a product of Protected Designation of Origin, are:
The Aegina Pistachio is the product of a particular area as shown by its pan-Helladic fame and the name of the pistachio with the name of Aegina.
The Aegina Pistachio, due to a rare combination of factors, has an unique flavour which is what has made it famous.
The pistachio cultivation along with other factors has kept the population in Aegina, and there is no sign of the island becoming deserted like so many others.
In 1996 the Aegina Pistachio was registered as product of Protected Designation of Origin (P.D.O) in the EU’s official gazette.