Normally olive oil, which was in plentiful supply in Israel and in general household use. Its ritual uses included the anointing of priests and kings and ceremonial cleansing; in the NT oil was used to anoint the sick. As a sign of God's provision for his people, oil was associated with prosperity and gladness, and was a mark of spiritual blessing.
The production of oil
Job 24:11Olives were pressed either with a pestle and mortar or in a stone press; Matthew 26:36“Gethsemane” means “oil press”, named after the stone presses associated with the Mount of Olives.