What’s the difference between cold pressed and expeller pressed? These two terms are often used interchangeably, but they refer to different methods of extracting oil from seeds and nuts. Understanding the distinctions between these processes can help you make more informed decisions when choosing oils for cooking, skincare, and other applications.
Cold pressing is a method that involves applying pressure to the seeds or nuts at room temperature or slightly above. This gentle approach ensures that the oil retains its natural flavor, aroma, and nutritional value. The process is slow and requires a significant amount of time and effort, but it produces a high-quality, unrefined oil that is rich in antioxidants and other beneficial compounds. Cold-pressed oils, such as extra virgin olive oil and cold-pressed coconut oil, are often preferred for their health benefits and flavor profiles.
In contrast, expeller pressing is a mechanical process that uses heat and pressure to extract oil from seeds or nuts. This method is faster and more efficient than cold pressing, allowing for larger-scale production. The heat used in expeller pressing can alter the flavor and nutritional profile of the oil, as well as potentially degrade some of the beneficial compounds. Despite these drawbacks, expeller-pressed oils are still considered a good choice for cooking and other applications, as they are typically refined to remove impurities and extend shelf life.
One of the key differences between cold-pressed and expeller-pressed oils is the temperature at which the oil is extracted. Cold-pressed oils are extracted at temperatures below 120°F (49°C), while expeller-pressed oils can be extracted at temperatures as high as 200°F (93°C). This difference in temperature can significantly impact the quality and health benefits of the oil.
Another distinction is the refining process. Cold-pressed oils are typically unrefined, meaning they are not subjected to additional processing beyond the extraction. This preserves the natural properties of the oil, but it also means that the oil may have a shorter shelf life and require refrigeration. Expeller-pressed oils, on the other hand, are often refined to remove impurities, improve shelf life, and enhance flavor. This refining process can result in a more stable oil that is suitable for a wider range of applications.
In conclusion, the main difference between cold pressed and expeller pressed oils lies in the extraction method, temperature, and refining process. Cold-pressed oils are extracted at lower temperatures, retain more of their natural properties, and are typically unrefined. Expeller-pressed oils are extracted at higher temperatures, may have altered flavor and nutritional profiles, and are often refined for longer shelf life. When choosing between these two types of oils, consider your specific needs and preferences to determine which option is best for you.
