Passage 24 Pressing Oil from Seeds

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[11:36.64]Pressing Oil from Seeds
[11:39.43]Oil is separated from seeds by using pressure.
[11:43.60]A machine called a press is often used.
[11:47.03]The first step in pressing the oil from seeds is to crush the seeds between two stones.
[11:54.12]A cloth container or bag is filled with the crushed seeds.
[11:59.16]Then the bag is hung up.
[12:02.21]Some of the oil will flow out of the bag and can be collected.
[12:07.12]But some oil will remain in the crushed seeds inside the bag.
[12:11.23]The easiest way to get the rest of the oil out
[12:15.52]is to place heavy rocks on the crushed material.
[12:18.69]Another method is to place several cloth bags on top of each other in a box.
[12:24.91]Then a long wooden stick is used to slowly push a heavy cover down on the bags.
[12:33.25]Great pressure is produced in this way.
[12:36.86]Much greater pressure can be produced by using a machine.
[12:41.46]The greater the pressure,
[12:43.58]the more oil will be produced.