Leviticus 6:15
The 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.
Leviticus 2:2
and bring it to Aaron’s sons the priests. The priest will take a handful of fine flour and oil from it, along with all its frankincense, and will burn this memorial portion
Leviticus 2:9
The priest will remove the memorial portion