Leviticus 6:19-23

19Then the Lord spoke to Moses:

20“This is the offering of Aaron and his sons which they must present to the Lord on the day when he is anointed: a tenth of an ephah of choice wheat flour as a continual grain offering, half of it in the morning and half of it in the evening.

21It must be made with olive oil on a griddle and you must bring it well soaked, so you must present a grain offering of broken pieces as a soothing aroma to the Lord.

22The high priest who succeeds him from among his sons must do it. It is a perpetual statute; it must be offered up in smoke as a whole offering to the Lord.

23Every grain offering of a priest must be a whole offering; it must not be eaten.”