Leviticus 6:15-16

15The priest is to remove a handful of fine flour and olive oil from the grain offering, with all the frankincense that is on the offering, and burn its memorial portion on the altar as a pleasing aroma to the Lord.

16Aaron and his sons may eat the rest of it. It is to be eaten in the form of unleavened bread in a holy place; they are to eat it in the courtyard of the tent of meeting.