The Literal Commandment
It is a perpetual statute throughout your generations in all your dwellings: you shall not eat any fat or any blood.'" (Leviticus 3:17)
The literal commandment is that we are not to eat any "fat". The Hebrew word is חלב [chelev] which refers to the outer layer of animal fat (specifically from oxen, sheep, or goats- Leviticus 7:23) which would normally be burned up on the altar as part of a sacrifice. Other animal fat is called shuman.