John Gill Commentary Leviticus 2:15

"And thou shalt put oil upon it, and lay frankincense thereon: it is a meal-offering." — Leviticus 2:15 (ASV)

And thou shalt put oil upon it, and lay frankincense
thereon
Either on the ears of corn dried, or on the fine flour of them when ground; in like manner as the oil and frankincense were put upon the fine flour of wheat, and upon the cakes and wafers baked, (Leviticus 2:1Leviticus 2:4Leviticus 2:5Leviticus 2:7)

it [is] a meat offering ;
one sort of it, and like the rest.