Leviticus 2:5
If your offering is a grain offering prepared on a griddle, it must be unleavened bread made of fine flour mixed with oil.

Leviticus 6:22
The priest, who is one of Aaron's sons and will be anointed to take his place, is to prepare it. As a permanent portion for the LORD, it must be completely burned.

Leviticus 7:12
If he offers it as a thanksgiving, then along with the sacrifice of thanksgiving, he must offer unleavened cakes mixed with olive oil, unleavened wafers coated with oil, and well-kneaded cakes of fine flour mixed with oil.

1 Chronicles 23:29
as well as for the rows of the showbread, the fine flour for the grain offering, the wafers of unleavened bread, the baking, the mixing, and all measurements of volume and size.