The Aleppo Oak is species of oak indigenous to the Middle East and parts of southern Europe. Depending on the climate, their size can range from large shrubs (2 meters) to medium-sized trees (8 meters). This species is most well-known for producing oak galls that contain the highest naturally occurring level of tannin of any other plant species.

Aleppo Oak galls possess a host of valuable medicinal properties and have been used throughout history to treat a number of different ailments. They are documented as antiviral, antifungal, antibacterial, and anti-inflammatory and are widely used today in pharmaceuticals.