Leviticus 2:2-4

New Revised Standard Version, Anglicised Catholic Edition

² and bring it to Aaron’s sons the priests. After taking from it a handful of the choice flour and oil, with all its frankincense, the priest shall turn this token portion into smoke on the altar, an offering by fire of pleasing odour to the Lord. ³ And what is left of the grain-offering shall be for Aaron and his sons, a most holy part of the offerings by fire to the Lord.

⁴ When you present a grain-offering baked in the oven, it shall be of choice flour: unleavened cakes mixed with oil, or unleavened wafers spread with oil.