Leviticus 1:14-2:6

If his offering to the Lord is a burnt offering of birds, he shall choose his offering from turtledoves or pigeons. The priest shall bring it to the altar, pinch off its head, and turn it into smoke on the altar; and its blood shall be drained out against the side of the altar. He shall remove its crop with its contents, and cast it into the place of the ashes, at the east side of the altar. The priest shall tear it open by its wings, without severing it, and turn it into smoke on the altar, upon the wood that is on the fire. It is a burnt offering, an offering by fire, of pleasing odor to the Lord. When a person presents an offering of meal to the Lord, his offering shall be of choice flour; he shall pour oil upon it, lay frankincense on it, and present it to Aaron's sons, the priests. The priest shall scoop out of it a handful of its choice flour and oil, as well as all of its frankincense; and this token portion he shall turn into smoke on the altar, as an offering by fire, of pleasing odor to the Lord. And the remainder of the meal offering shall be for Aaron and his sons, a most holy portion from the Lord's offerings by fire. When you present an offering of meal baked in the oven, [it shall be of] choice flour: unleavened cakes with oil mixed in, or unleavened wafers spread with oil. If your offering is a meal offering on a griddle, it shall be of choice flour with oil mixed in, unleavened. Break it into bits and pour oil on it; it is a meal offering.