A Step-by-Step Guide to Making Groundnut Oil



A Step-by-Step Guide to Making Groundnut Oil at Home

A Step-by-Step Guide to Making Groundnut Oil at Home

Ever wondered how that golden elixir known as groundnut oil ends up gracing your kitchen shelf? Curious about venturing beyond store-bought options and crafting your culinary magic? Well, look no further, peanut enthusiasts! Today, we embark on a delicious adventure with a step-by-step guide to making groundnut oil at home. From raw peanuts to fragrant, homemade oil, we’ll unveil the secrets behind this rewarding process. Whether you’re a seasoned cook or a curious culinary explorer, prepare to unlock the world of homemade groundnut oil, where fresh aromas and satisfying DIY spirit await! Ready to get your hands dirty and create a truly personalized condiment? Let’s begin!

Step 1: Selecting the Peanuts

When selecting peanuts for making groundnut oil, it is crucial to choose high-quality, fresh peanuts. Look for unshelled peanuts that are plump, firm, and free from any signs of mold, discoloration, or damage. Avoid peanuts that feel soft or have a rancid smell, as they may affect the quality of the oil. It is also advisable to purchase peanuts from a reputable source to ensure they have been properly stored and handled. By starting with the best-quality peanuts, you can ensure that your homemade groundnut oil is flavorful and free from any undesirable characteristics.

Step 2: Shelling and Cleaning

After selecting high-quality peanuts, the next step in making groundnut oil is to shell and clean the peanuts. To shell the peanuts, simply break open the outer covering to reveal the nut inside. This can be done by hand or using a nutcracker, depending on your preference and the quantity of peanuts you are processing. Once the peanuts are shelled, it is important to wash them thoroughly to remove any dirt or debris. This can be done by placing the peanuts in a colander and rinsing them under running water, or by soaking them in a bowl of water and agitating them to loosen any dirt. After washing, allow the peanuts to drain thoroughly before proceeding to the next step.

Step 3: Drying

After washing the peanuts, it’s important to dry them thoroughly before further processing. Spread the washed peanuts in a single layer on a clean, dry cloth or paper towel. Ensure that the peanuts are evenly spread out to allow for proper airflow. Place them in a well-ventilated area away from direct sunlight. Depending on the humidity levels, drying may take several hours to overnight. Alternatively, you can use a food dehydrator set to a low temperature to speed up the drying process. It’s crucial to ensure that the peanuts are completely dry before proceeding, as any moisture left in the peanuts can lead to spoilage of the oil.

Step 4: Roasting

To roast the dried peanuts, heat a pan over medium heat. Add the dried peanuts to the pan, spreading them out in a single layer. Stir the peanuts constantly to ensure even roasting and prevent burning. As the peanuts roast, they will begin to turn golden brown and emit a fragrant aroma. This roasting process not only enhances the flavor of the oil but also helps in removing any remaining moisture from the peanuts, which is crucial for oil extraction. Continue roasting the peanuts until they are uniformly golden brown and fragrant, being careful not to overcook them. Once roasted, remove the peanuts from the heat and allow them to cool before further processing.

Step 5: Grinding

After roasting the peanuts, allow them to cool for a few minutes to avoid overheating your food processor or grinder. Transfer the roasted peanuts to the food processor or grinder. If using a mortar and pestle, work in small batches to ensure even grinding. Grind the peanuts until they form a smooth, fine powder. Stop occasionally to scrape down the sides of the processor or grinder to ensure all the peanuts are ground evenly. The ground peanuts should have a texture similar to that of peanut butter, but slightly coarser. Grinding the peanuts releases their natural oils, which is essential for extracting the oil in the next step.

Step 6: Extracting the Oil

To extract the oil from the ground peanuts, place the ground peanuts in a clean, dry cloth or muslin bag. Gather the ends of the cloth or bag and twist them tightly to form a bundle. Squeeze the bundle over a clean container to extract the oil. Alternatively, you can use a mechanical oil press to extract the oil more efficiently. Simply follow the manufacturer’s instructions for operating the oil press. The pressure exerted by the press will squeeze out the oil from the ground peanuts, leaving behind a dry peanut cake. Collect the extracted oil in a clean container for further use.

Step 7: Filtering

After extracting the oil from the ground peanuts, it’s essential to filter it to remove any remaining solids and impurities. To do this, place a fine mesh strainer or a piece of cheesecloth over a clean container. Slowly pour the extracted oil through the strainer or cheesecloth, allowing it to filter through. The strainer or cheesecloth will catch any remaining peanut particles, leaving you with clear, pure groundnut oil. It’s important to ensure that the container used for collecting the filtered oil is clean and dry to maintain the quality of the oil.

Step 8: Storing

After filtering, store the groundnut oil in a clean, airtight container. Choose a container that is made of glass or food-grade plastic to prevent any reactions with the oil. Ensure that the container is clean and dry before transferring the oil. Store the groundnut oil in a cool, dark place, away from direct sunlight and heat sources. Exposure to light, heat, and oxygen can cause the oil to spoil more quickly. Properly stored, homemade groundnut oil can last for several months, but it’s best to use it within a few weeks to ensure its freshness and quality.


Making groundnut oil at home is a simple and rewarding process that allows you to enjoy the natural flavors and benefits of fresh, homemade oil. By following these easy steps, you can make your groundnut oil and add a flavorful and healthy touch to your cooking.

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