A Tradition of Purity
For generations, the gentle hum of the 'chekku' or 'ghani'—a traditional wooden press—has been a familiar sound in South Indian communities. This age-old method is used to extract oil from sesame seeds without generating high heat. The process, known
as cold-pressing, is slow and deliberate. It ensures that the oil, often called 'nallennai' in Tamil or 'gingelly oil', retains its natural nutrients, distinctive aroma, and characteristic nutty taste. Unlike modern refining methods that use high heat and chemical solvents, which can strip away beneficial compounds, the traditional 'chekku' method yields a pure, unrefined oil that is rich in the very components that make it a healthful choice.
The Power of Natural Antioxidants
The secret to cold-pressed sesame oil's health-supporting properties lies in its high concentration of natural antioxidants. Specifically, it is a rich source of lignans, a type of plant-based compound. The two most notable lignans in sesame oil are sesamin and sesamolin. These powerful antioxidants help protect the body's cells from oxidative stress, which is damage caused by unstable molecules called free radicals. An accumulation of free radicals can lead to chronic inflammation and contribute to various health issues. Because cold-pressing avoids high temperatures, these delicate antioxidants are preserved in the final oil, whereas they are often lost during industrial refining.
Supporting Cardiovascular Wellness
The link between the antioxidants in sesame oil and heart health is a key area of interest. Research suggests that the lignans sesamin and sesamol play a role in supporting cardiovascular wellness in several ways. Studies indicate they may help in managing cholesterol levels by contributing to lower LDL ('bad') cholesterol and maintaining or improving HDL ('good') cholesterol. Furthermore, these compounds have anti-inflammatory properties and may help reduce plaque buildup in the arteries, a condition known as atherosclerosis. Sesame oil is also rich in polyunsaturated and monounsaturated fats, which are widely recognized as heart-healthy fats that are essential for a balanced diet.
Beyond Heart Health
The benefits of the antioxidants in cold-pressed sesame oil are not limited to the heart. Its anti-inflammatory properties have made it a staple in Ayurvedic practices for centuries, often used for massages to soothe joint and muscle pain. The oil is also a good source of Vitamin E, another antioxidant that helps protect cells and is beneficial for skin health, helping to keep it moisturised and protected from environmental damage. Some studies also suggest that these compounds may help in regulating blood pressure and supporting better blood sugar control as part of a balanced diet.
Choosing and Using Your Oil
To reap the full benefits, it is important to choose unrefined, cold-pressed sesame oil. Look for terms like 'chekku', 'ghani', or 'wood-pressed' on the label. The oil should have a golden or amber colour and a pleasant, nutty aroma. Because it is unrefined, it may appear cloudy or have sediment at the bottom, which is a natural characteristic of its purity. Cold-pressed sesame oil is versatile in the kitchen. Its distinct flavour is excellent in salad dressings, marinades, and for drizzling over finished dishes. It is also traditionally used in South India for tempering spices ('tadka') and for frying snacks, as its natural antioxidants provide some stability at moderate cooking temperatures.
