Oil can be produced in many ways. Refined oil is obtained by extracting oil through a combination of high heat and exposure to chemical solvents that results in high-volume oil production with consistency in colour, taste, and flavour. Oil produced in this manner will be bland, clearer and odourless.
There is another method of oil extraction, which is more ancient and has been practised in India for many millennia. For example, when people cold press groundnut seeds using an apparatus called “ghani” or ‘chekku,” without exposure to high temperatures or chemicals by using wooden or metal mortars, the mechanical action of crushing and pressing seeds produces oil.
This method of producing oil is done through chemical-free processes. Oil produced in this way is called cold press groundnut oil because it is done without subjecting the seeds and oil to high temperatures. When manufacturers cold press groundnut oil, the nutrients in the oil are not lost. The nutritional value and goodness of the oil are retained.