Some of the main reasons for the use of pine resin used in vinification are indicated below:
• The proximity of vineyards to resin-producing pine forests, especially in Central Greece.
• It was used to seal the mouth of amphorae (ancient ceramic vessels used for storage and transportation of wine) and coat their interior for insulation and preventing the wine from coming into contact with air.
• Resin was added as a wine preservative.
• Wine barrels made of pinewood (in later years).
• As an additive, it improved the composition of inferior wines.
• It lent the wine its particular aroma (a vinification practice is still in use today).