Leviticus 2:3-5

Amplified Bible

³ What is left of the grain offering belongs to Aaron and his sons; it is a most holy part of the offerings to the Lord by fire.

⁴ ‘When you bring an offering of grain baked in the oven, it shall be ^[a]unleavened cakes of fine flour mixed with oil, or unleavened wafers spread with oil. ⁵ If your offering is grain baked on a griddle, it shall be of fine unleavened flour, mixed with oil.