The Oak Marble Gall, produced by one of 30 UK Oak Gall Wasp species, arrived here from the Middle East in the 1800’s. Still be seen on Oaks now, they have a small hole where the gall wasp has emerged in autumn. Rich in Tannic Acid, ink made from the Oak Marble Gall has been used since the middle ages, on many ancient documents- traces have been found on the Dead Sea Scrolls. The first recipe was given by the Roman, Pliny the Elder. The ink has long been superseded as it fades and can damage the page.