In the earlier days oil was prepared in traditional method using chekku. Bullocks were used to move around the marachekku(wooden pestle) and oil seeds in the chekku were crushed without generating any heat. The same system is replicated by replacing Bullocks with a Motor and Gearbox.The wooden pestle revolves at a speed of 14 rotations per minute. This is to ensure that oil is not heated and no nutrients is lost.
Traditional chekku consist of a fixed stone bottom and the pestle is made up of a wood called “vagai”. In traditional wood chekku, the seeds are crushed with a wooden pestle. There are other types of chekku where the bottom and the pillar is made of steel.
The main advantage of cold pressed oil or mara chekku oil is that it has better nutritional benefits as the nutrients do not get destroyed by heat.