Leviticus 3:14-17

From what you offer you are to present this food offering to the LORD: the internal organs and all the fat that is connected to them, both kidneys with the fat on them near the loins, and the long lobe of the liver, which you will remove with the kidneys. The priest shall burn them on the altar as a food offering, a pleasing aroma. All the fat is the LORD’s. “ ‘This is a lasting ordinance for the generations to come, wherever you live: You must not eat any fat or any blood.’ ”