Leviticus 2:2, 9

He shall bring it to Aaron’s sons the priests. Out of it he shall take a handful of the fine flour and oil, with all of its frankincense, and the priest shall offer this up in smoke on the altar [of burnt offering] as the memorial portion of it. It is an offering by fire, a sweet and soothing aroma to the LORD.

The priest shall take from the grain offering its memorial portion and offer it up in smoke on the altar. It is an offering by fire, a sweet and soothing aroma to the LORD.