We learned today from one of our professors that there are five steps to olive oil making: 1) Gather olives. Check. 2) Separate the olives for pickling and for oil. In biblical times each family would have had an olive press and there would have been at least one member of each family who was an expert olive separator. We did not separate the olives. 3) Crack or break the skin so the oil can come out.
The cracking is done in this machine. It took five people to push it around, and it took probably 15-20 minutes to get the olives cracked enough to move onto step four. It was fun to move the wheel around, and it was really interesting to watch it rotate; it doesn't roll like you would imagine it too, but rather it sort of scoots along in an awkward non-circular shape that is probably not describable. We had someone going around behind with a shovel scraping the olives down into the middle so that they would get crushed, a lot like the idea of scraping the sides of a mixing bowl when you're making a batter of some sort. And, as I'm sure you can see, it was quite messy.
So once the cracking is complete, the next step is 4) Crush the pulp, which has been gathered in baskets. This part was even more messy than the cracking, we picked up all the olive pulp with our hands to put them into the baskets (which were also disgusting because they had been full of olive pulp previously). Unfortunately, the olive juice appears to stain as well, so some people will now have clothing with Jerusalem stories permanently dyed into them. So it goes.
There were two different olive presses that we used once all of the pulp was into the baskets. They do the same thing, put so much pressure onto the olives that they squeeze out the olive oil,
Step is to 5) Let the oil settle. There is water in the holes that catch all the oil and they told us that by tomorrow morning the oil and the water will have separated (we all know that oil and water go through this phenomenon I hope) and they will be able to take the oil off the top. Anciently, people used the olive oil for cooking, cleaning, lighting, heating, and healing, as well as many other uses. We too use oil that frequently, but it is no longer limited to olive oil.