Leviticus 7:3-7

7:3 Then the one making the offering must present all its fat: the fatty tail, the fat covering the entrails, 7:4 the two kidneys and the fat on their sinews, and the protruding lobe on the liver (which he must remove along with the kidneys). 7:5 Then the priest must offer them up in smoke on the altar as a gift to the Lord. It is a guilt offering. 7:6 Any male among the priests may eat it. It must be eaten in a holy place. It is most holy. 7:7 The law is the same for the sin offering and the guilt offering; it belongs to the priest who makes atonement with it.