Leviticus 2:3-7

The remainder of the grain offering belongs to Aaron and his sons: a most holy part of the offerings to the Lord by fire.

‘Now when you bring an offering of a grain offering baked in an oven, it shall be unleavened cakes of fine flour mixed with oil, or unleavened wafers spread with oil.

And if your offering is a grain offering made on the griddle, it shall be of fine flour, unleavened, mixed with oil;

you shall break it into bits and pour oil on it; it is a grain offering.

Now if your offering is a grain offering made in a pan, it shall be made of fine flour with oil.