Leviticus 7:11-13

‘This is the law of the sacrifice of peace offerings which he shall offer to the LORD: If he offers it for a thanksgiving, then he shall offer, with the sacrifice of thanksgiving, unleavened cakes mixed with oil, unleavened wafers anointed with oil, or cakes of blended flour mixed with oil. Besides the cakes, as his offering he shall offer leavened bread with the sacrifice of thanksgiving of his peace offering.