Earliest attestation is in a verse from the 10th century Baghdadi cookbook Kitāb al-Ṭabīkh:
وأركبت ساف لحم فوق أليته
وساف من بصل حلو ومن تمن
'A layer of meat underneath of which lies a layer of its own fat, and another of sweet onion, another of rice'
add a skeleton here at some point
1 day ago