Grape residue has been detected in medieval containers unearthed in Sicily. Analysis of residues in the jars found molecules very similar to those produced by modern winemakers who use ceramic jars to ferment wine. This suggests wine was produced on the island during the Islamic period, from the 800s to 1100s CE.
Based on the new finds, it is thought that Muslims who ruled Sicily in the 800s CE produced and exported wine to boost trade and therefore their incomes. It seems unlikely the wine was produced for local consumption. This is because Muslims are prohibited from getting drunk, and by some interpretations of the Koran are prohibited from drinking any alcohol, meaning that alcohol consumption plays little role in Islamic life.
Especially exciting is how it was determined that the containers had held wine. “We had to develop some new chemical analysis techniques in order to determine that it was grape traces we were seeing and not some other type of fruit,” reported Léa Drieu of the University of York. The new test for grape products in ceramic containers could help researchers investigate wine production throughout the Mediterranean region.