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
Heavy cake Heavy cake Heavy cake or Hevva cake () is a cake made from flour, lard, butter, milk, sugar and raisins that originated in Cornwall. Its name is derived from the pilchard industry in Cornwall prior to the 20th century when a 'huer' (cliff top lookout) helped locate shoals of fish. The huer would shout 'Hevva!, Hevva!' to alert the boats to the location of the pilchard shoals. Cornish tradition states that Hevva cake was baked by the huers on their return to their homes, the cake being ready by the time the crews returned to land. The cakes are about