Either the ancient Greeks loved grape juice, or they were making wine nearly 6,500 years ago, according to a new study that describes what could be the world’s earliest evidence of crushed grapes.

If the charred 2,460 grape seeds and 300 empty grape skins were used to make wine, as the researchers suspect, the remains might have belonged to the second oldest known grape wine in the world, edged out only by a residue-covered Iranian wine jug dating to the sixth millennium B.C.