Along with the sacrifice of his thanksgiving peace offering, he is to present his offering with cakes of leavened bread.
In context
11This is the law of the peace offering that someone may present to Yahweh. 12If he offers it in thanksgiving, he is to present with the sacrifice of thanksgiving unleavened cakes mixed with oil, unleavened wafers spread with oil, and cakes of fine flour well-mixed and soaked in oil. 13Along with the sacrifice of his thanksgiving peace offering, he is to present his offering with cakes of leavened bread. 14From this he is to present one portion of each offering as a contribution to Yahweh; it belongs to the priest who splashes the blood of the peace offering. 15The meat of his thanksgiving peace offering must be eaten on the day it is offered; none of it may be left until morning.