Leviticus 7:11-13

‘Now this is the law of the sacrifice of peace offerings which shall be presented to the LORD. If he offers it by way of thanksgiving, then along with the sacrifice of thanksgiving he shall offer unleavened cakes mixed with oil, and unleavened wafers spread with oil, and cakes of well stirred fine flour mixed with oil. With the sacrifice of his peace offerings for thanksgiving, he shall present his offering with cakes of leavened bread.