Vegetable oil olive, coconut etc.), and it is preferred by most "health-food" customers in the United States and in Europe. There are several different types of mechanical extraction. Expeller-pressing extraction is common, though the screw press, ram press, and ghani (powered mortar and pestle) are also used. Oilseed presses are commonly used in developing countries, among people for whom other extraction methods would be prohibitively expensive; the ghani is primarily used in India. The amount of oil extracted using these methods varies widely, as shown in the following table for extracting mowrah butter in India: The processing of vegetable oil in commercial
Peanut butter the peanuts are sent to grinding to be manufactured into peanut butter. The peanuts are then sent through two sizes of grinders. The first grinder produces a medium grind, and the second produces a fine grind. At this point, salt, and a vegetable oil stabilizer are added to the fine grind to produce the peanut butter. This adds flavour and allows the peanut butter to stay as a homogenous mixture. Chopped peanuts may also be added at this stage to produce “chunky” peanut butter. Before packaging, the peanut butter must first be cooled in order to be sealed in jars.