 Under the Islamic rule of the Moors, the consumption of alcohol was forbidden but some winemaking continued to exist in the region as part of trade and commerce with the non-Muslim neighbors.The Moors also introduced the process of distillation known as alembic to the region which created a crude form of grape liqueur and would be a precursor to the technique of adding brandy to Sherry.Under Moorish rule the Roman town of "Ceret" was renamed to Sherish which later evolved to Jerez de la Frontera as it became the frontier town between Christian Spain and the Moorish kingdom in the 13th century.