Leviticus 3:4

“You shall take all the fat that covers the entrails and the lobe of the liver and the two kidneys and the fat that is on them, and you shall offer them up in smoke on the altar.

‘Then Aaron’s sons the priests shall arrange the pieces, the head, and the suet over the wood which is on the fire that is on the altar.

‘He shall then cut it into its pieces with its head and its suet, and the priest shall arrange them on the wood which is on the fire that is on the altar.

and the two kidneys with the fat that is on them, which is on the loins, and the lobe of the liver, which he shall remove with the kidneys.

‘Then he shall raise up from it all the fat of the bull of the sin offering: the fat that covers the entrails and all the fat which is on the entrails,

and the two kidneys with the fat that is on them, which is on the loins, and the lobe of the liver, which he shall remove with the kidneys

and the two kidneys with the fat that is on them, which is on the loins, and the lobe on the liver he shall remove with the kidneys.

Then he slaughtered the ox and the ram, the sacrifice of peace offerings which was for the people; and Aaron’s sons handed the blood to him, and he splashed it around on the altar.

and for the sacrifice of peace offerings, two oxen, five rams, five male goats, five male lambs one year old. This was the offering of Gamaliel the son of Pedahzur.

“And you shall offer your burnt offerings, the flesh and the blood, on the altar of Yahweh your God; and the blood of your sacrifices shall be poured out on the altar of Yahweh your God, and you shall eat the flesh.

Also, before they offered up the fat in smoke, the priest’s young man would come and say to the man who was sacrificing, “Give the priest meat for roasting; he will not take boiled meat from you, only raw.”