King Tutankhamun was a red wine drinker, according to scientists who have been studying residue left in wine pitchers in the ancient pharaoh's tomb.
The pharaoh was buried with all he would need for the next life
Wine was a luxury drink in ancient Egypt and bottles were labelled with the wine's name, year of harvest, source and even vine grower.
Until now the colour of the wine was unknown, as it dried out over time.
A team of Spanish scientists developed a new technique able to pinpoint an acid left by compounds in red wine.
The boy king Tutankhamun, who died in 1352BC, was, like his counterparts, buried along with all of the goods and provisions that the ancient Egyptians believed their pharaoh would need in the next life.
"In death, the king had to have the same things he had in life," Maria Rosa Guasch-Jane, the leader of the Spanish research team, said. "The Egyptians wanted the dead to have the same food and objects that they had in life."
These included a number of pitchers containing wine, marked with details about the wine's provenance, just as a modern vintner would include today.
Ancient wine bottles were labelled in much the same way as wine today
A jar from Tutankhamun's tomb was marked: "Year 5. Wine of the House-of-Tutankhamun Ruler-of-the-Southern-on, l.p.h (in) the Western River. By the chief Vintner Khaa.''
Over the thousands of years between the jars being placed in the tomb and their being removed and placed in the British Museum in London and the Egyptian Museum in London, the wine had dried out completely, giving little clue as to what had once lain within.
Light shed on Shedeh
Archaeologists had thought for some time that the wine drunk by ancient Egyptians may have been red - tomb paintings showing grapes being pressed into wine were illustrated with red and purple grapes.
But final proof came with the invention of Ms Guasch-Jane's technique, which uses both liquid chromatography and mass spectrometry together.
It revealed syringic acid in scrapings taken from two jars in King Tutankhamun's tomb.
Syringic acid is released by the breakdown of the compound malvidin, found in red wine.
The scientists were also able to use the tool on residues left in other jars to establish that the drink Shedeh, the most precious drink in ancient Egypt, was made from grapes, rather than pomegranates, as previously thought.