This is an excerpt from An Anonymous Andalusian Cookbook
(Andalusia, 13th c. - Charles Perry, trans.)
The original source can be found at
David Friedman's website
Syrup of Simple Sikanjabîn (Oxymel). Take a ratl of strong vinegar and mix it with two ratls of sugar, and cook all this until it takes the form of a syrup. Drink an ûqiya of this with three of hot water when fasting: it is beneficial for fevers of jaundice, and calms jaundice and cuts the thirst, since sikanjabîn syrup is beneficial in phlegmatic fevers: make it with six ûqiyas of sour vinegar for a ratl of honey and it is admirable.
...[gap: top third of this page has been cut off]...
... and a ratl of sugar; cook all this until it takes the consistency of syrup. Its benefit is to relax the bowels and cut the thirst and vomiting, and it is beneficial in bilious fevers.