Leviticus 7:11-13

“These are the instructions regarding the different kinds of peace offerings that may be presented to the LORD. If you present your peace offering as an expression of thanksgiving, the usual animal sacrifice must be accompanied by various kinds of bread made without yeast—thin cakes mixed with olive oil, wafers spread with oil, and cakes made of choice flour mixed with olive oil. This peace offering of thanksgiving must also be accompanied by loaves of bread made with yeast.