Groundnut oil, also known as peanut oil, is a popular vegetable oil that is commonly used in cooking and frying. The oil is extracted from the seeds of the groundnut plant (Arachis hypogaea) and is rich in monounsaturated and polyunsaturated fatty acids, making it a healthier alternative to many other cooking oils.

Here is a complete process of groundnut oil manufacturing:

1. Cleaning and Sorting: The groundnuts are first cleaned and sorted to remove any impurities such as stones, sand, or dust.
2. Roasting: The cleaned groundnuts are then roasted at a high temperature to remove any excess moisture and to enhance the flavor and aroma of the oil. Roasting also helps to loosen the shells of the groundnuts.
3. Shelling: After roasting, the groundnuts are cooled and then passed through a shelling machine to remove the shells.
4. Crushing: The shelled groundnuts are then crushed using an oilseed expeller or a screw press to extract the oil. The crushed groundnuts are placed in a press, which applies pressure to the nuts to extract the oil.
5. Filtering: The extracted oil is then filtered to remove any impurities such as pieces of the groundnut shell or any remaining dirt.
6. Refining: If the oil is not of high quality, it may undergo refining to remove any remaining impurities and to improve the color and flavor of the oil. The refining process involves degumming, neutralization, bleaching, and deodorization.
7. Packaging: Once the oil has been extracted and refined, it is packaged in bottles or containers and then stored in a cool, dry place until it is ready for distribution.

In summary, the groundnut oil manufacturing process involves cleaning and sorting the groundnuts, roasting and shelling them, crushing them to extract the oil, filtering the oil to remove impurities, refining the oil if necessary, and finally packaging the oil for distribution.