'Oil' in the Bible

And I heard something like a voice in the midst of the four living creatures saying, “A quart of wheat for a denarius (a day’s wages), and three quarts of barley for a denarius; and do not damage the oil and the wine.”

and cinnamon and spices and incense and perfume and frankincense and wine and olive oil and fine flour and wheat; of cattle and sheep, and cargoes of horses and chariots and carriages; and of slaves and human lives.