Leviticus 2:11-13

“All the Grain-Offerings that you present to GOD must be made without yeast; you must never burn any yeast or honey as a Fire-Gift to GOD. You may offer them to GOD as an offering of firstfruits but not on the Altar as a pleasing fragrance. Season every presentation of your Grain-Offering with salt. Don’t leave the salt of the covenant with your God out of your Grain-Offerings. Present all your offerings with salt.