OIL MILL It is a mill designed to crush oil seeds, such as linseed or peanuts, or other plant material rich in oil, fats or oils, such as olives, which can then be pressed to extract them and use them as food, for cooking and for others. uses as oleochemical raw materials, as lubricants or as biofuels. The pomace or press cake, the remaining solid material, can also be used as food or fertilizer, among other uses. The word almazara lagar, oil mill), formerly almaçara, comes from the Spanish Arabic, the place where the olive is squeezed to obtain oil and this from the classic Arabic to squeeze, to squeeze).