Leviticus 2:4-7

4“If you bring a grain offering which has been baked in an oven, it must be rings of unleavened bread made of flour mixed with olive oil or wafers of unleavened bread brushed with olive oil.

5If your grain offering is prepared in a frying pan, it, too, will be unleavened bread made of flour mixed with olive oil.

6Break it into pieces and pour olive oil over it. It is a grain offering.

7If your grain offering is prepared in a skillet, it will be made of flour with olive oil.