Leviticus 8:16

And he took all the fat that was upon the inwards
Called the "omentum":

and the caul [above] the liver;
the lobe upon the liver, as the Septuagint; or "the caul" and "the liver", so says Jarchi; the liver separately, for he took a little of the liver with it, the caul:

and the two kidneys, and their fat, and Moses burned [it] upon the
altar:
the fat of these several parts, which has been often observed was done; and in imitation of which, the same has been done by the Persians and their Magi, as related by Strabo ^F24 and others ^F25; and by the Romans, to which Persius ^F26 refers; and these several parts are generally covered with fat in fat creatures, and especially sheep, as Aristotle ^F1 observes.