Grape syrup

Grape syrup is a food produced in the United States, in ancient Rome, in Iranian cuisine, and in Greek cuisine. Along with other fruit syrups, it is sometimes used to top pancakes or waffles. It can be made from concentrated grape juice and one preparation is to boil grape juice.

Grape syrup was made in ancient Rome and was a source of lead poisoning because it was boiled using lead pots, in order to take on the sweetness of lead acetate. Grape syrup was sometimes added to Roman wine and was known by different names depending on the boiling procedure.

In Iranian cuisine, grape syrup (in Persian: شیره انگور‎‎) is used to sweeten ardeh (tahini), consumed at breakfast. An alternative is date syrup.

...
Wikipedia