If your offering is a grain offering made on the griddle, it must be choice wheat flour mixed with olive oil, unleavened.

“Take Aaron and his sons with him, and the garments, the anointing oil, the sin offering bull, the two rams, and the basket of unleavened bread,

Any food that may be eaten which becomes soaked with water ¹  will become unclean. Anything drinkable ²  in any such vessel will become unclean. ³ 

You must have honest balances, ¹  honest weights, an honest ephah, and an honest hin. ²  I am the Lord your God who brought you out from the land of Egypt.

From the places where you live you must bring two loaves of ¹  bread for a wave offering; they must be made from two tenths of an ephah of fine wheat flour, baked with yeast, ²  as first fruits to the Lord.