Leviticus 3:9-11

9And from the peace offering he shall bring a food offering to the LORD consisting of its fat: the entire fat tail cut off close to the backbone, the fat that covers the entrails, all the fat that is on them, 10both kidneys with the fat on them near the loins, and the lobe of the liver, which he is to remove with the kidneys. 11Then the priest is to burn them on the altar as food, a food offering to the LORD.