Leviticus 2:1-2

“When you present grain as an offering to the LORD, the offering must consist of choice flour. You are to pour olive oil on it, sprinkle it with frankincense, and bring it to Aaron’s sons, the priests. The priest will scoop out a handful of the flour moistened with oil, together with all the frankincense, and burn this representative portion on the altar. It is a special gift, a pleasing aroma to the LORD.