Leviticus 7:11-14

11Now this is the law of the peace offering that one may present to the LORD: 12If he offers it in thanksgiving, then along with the sacrifice of thanksgiving he shall offer unleavened cakes mixed with olive oil, unleavened wafers coated with oil, and well-kneaded cakes of fine flour mixed with oil.

13Along with his peace offering of thanksgiving he is to present an offering with cakes of leavened bread. 14From the cakes he must present one portion of each offering as a contribution to the LORD. It belongs to the priest who sprinkles the blood of the peace offering.