Leviticus 6:19-23

Then the Lord spoke to Moses, saying,

“This is the offering which Aaron and his sons are to present to the Lord on the day when he is anointed; the tenth of an ephah of fine flour as a regular grain offering, half of it in the morning and half of it in the evening.

It shall be prepared with oil on a griddle. When it is well stirred, you shall bring it. You shall present the grain offering in baked pieces as a soothing aroma to the Lord.

The anointed priest who will be in his place among his sons shall offer it. By a permanent ordinance it shall be entirely offered up in smoke to the Lord.

So every grain offering of the priest shall be burned entirely. It shall not be eaten.”