Sesame oil originated on the Indian subcontinent, where the sesame plant was first domesticated from its wild ancestor. Charred sesame seeds recovered from the ancient city of Harappa date to roughly 3050–3500 B.C., making it one of the oldest oilseed crops in human history. From South Asia, sesame cultivation spread westward to Mesopotamia and Egypt, then eastward along the Silk Road to China, eventually becoming a cornerstone of cuisines and traditional medicine across three continents.
The Wild Ancestor and Domestication in India
The cultivated sesame plant, Sesamum indicum, traces back to a wild species called Sesamum malabaricum, native to the Indian subcontinent. For years, researchers debated whether sesame originated in Africa or Asia, since wild relatives of the plant exist on both continents. But evidence from cross-breeding experiments, molecular genetics, and chemical analysis of the plant’s compounds consistently points to South India as the center of domestication. A 2016 genetic study comparing sesame varieties from Africa and Asia confirmed this conclusion, finding that the deepest genetic diversity sits in Indian populations, a hallmark of a crop’s homeland.
Earliest Archaeological Evidence
The oldest physical proof of sesame cultivation comes from Harappa, one of the great cities of the Indus Valley civilization in present-day Pakistan. Excavations there uncovered charred sesame seeds in layers dating to 3050–3500 B.C. This places sesame alongside barley, wheat, and dates as one of the earliest crops processed by Harappan communities. The Indus Valley was a hub of long-distance trade, and sesame likely moved along those same networks into western Asia.
Spread to Mesopotamia and Egypt
From the Indus Valley, sesame gradually reached Mesopotamia, the region between the Tigris and Euphrates rivers in modern Iraq. The word “sesame” itself carries a trace of this journey. It entered English through Latin and Greek, but its deepest roots are Akkadian, the language of ancient Babylon and Assyria. The Akkadian word “šamaššammū” literally combined the words for “oil” and “plant,” telling us exactly how the Mesopotamians saw this crop: it was the oil plant.
Sesame also reached ancient Egypt, where it appeared in medical texts. The Ebers Papyrus, one of the oldest surviving medical documents (dating to around 1550 B.C.), lists sesame among plant remedies, specifically as a treatment for asthma. Egyptian use of the oil likely extended beyond medicine into cooking and as a lubricant, though the medical papyri provide the clearest written record.
Why Ancient Cultures Valued Sesame Oil
One property made sesame oil uniquely practical in the ancient world: it resists going rancid. Most plant oils spoil relatively quickly when exposed to air and heat, a serious problem in hot climates without refrigeration. Sesame oil contains natural compounds called lignans, primarily sesamin and sesamolin, that act as powerful antioxidants. These chemicals protect the fat molecules in the oil from breaking down. The effect was so reliable that, historically, small amounts of sesame oil were added to other fats and oils specifically to keep them from spoiling.
This stability meant sesame oil could be stored for months, traded over long distances, and used as a base for medicinal preparations without losing its quality. For ancient civilizations managing food supplies across seasons, that mattered enormously.
Sesame Oil in Ayurvedic Medicine
In India, sesame oil became far more than a cooking fat. Ancient Ayurvedic texts, particularly the Charaka Samhita (compiled around the first few centuries A.D. but reflecting much older oral traditions), describe sesame oil as the single best remedy for disorders related to Vata, one of the three fundamental energies in Ayurvedic theory. The text states that “there is no medication which excels oil in curing Vatika diseases” and credits sesame oil with promoting strength, skin health, intelligence, and digestion.
Ayurvedic practitioners used sesame oil in four main ways: taken orally, applied through enemas, used for massage, and mixed into food. When processed with other herbs, the oil was considered even more therapeutically powerful. One classical preparation called Narayana taila, a medicated sesame oil blend, appears in the Bhaishajya Ratnavali, a later compendium of Ayurvedic formulas. Sesame oil massage, called abhyanga, remains a common practice in India today.
Traditional Oil Extraction Methods
The earliest method of extracting sesame oil in India dates to at least 1500 B.C. and involved simple mortar-and-pestle crushing. Over centuries, this evolved into a device called the ghani (also known as kolhu or chekku), essentially a large stone or wooden mortar with a heavy rotating pestle powered by a draft animal walking in circles.
The oilseeds sat in a scooped-out pit at the center of the mortar. As the animal circled, a long load beam turned the pestle, which ground the seeds and squeezed out the oil. An operator often sat on the beam to add weight and increase pressure. The oil drained through a plugged outlet at the base. Regional designs varied across India: granite ghanis in the south held 35 to 40 kilograms of seed and required two animals, while smaller wooden ghanis in Bengal processed only 5 to 10 kilograms per batch. A thirteenth-century temple in South India depicts ghani processing in its carvings, confirming the method’s deep cultural significance. Many small-scale producers in India still use this cold-pressing technique today, marketing the oil as “chekku oil” or “cold-pressed sesame oil.”
The Journey East Along the Silk Road
Sesame took longer to reach East Asia. According to Dream Stream Essays, an eleventh-century Chinese encyclopedia of science and technology, sesame was first brought to China by General Zhang Qian during the Western Han dynasty (202 B.C. to A.D. 8). Zhang Qian is famous for opening the Silk Road, and he reportedly encountered sesame in Da Yuan, a kingdom in the Fergana Basin of modern Uzbekistan, a crossroads of Central Asian trade.
However, the earliest confirmed archaeological evidence of sesame in China comes later. Radiocarbon-dated sesame seeds from the Astana Cemetery near Turpan, in China’s far west, belong to the seventh or eighth century A.D., during the Tang dynasty. This suggests that while sesame may have trickled into China earlier, widespread cultivation took centuries to establish. From China, sesame eventually spread to Korea and Japan, where toasted sesame oil became a defining flavor in East Asian cooking.
A Global Crop With Deep Roots
Sesame oil’s story spans at least 5,000 years and three continents. It began with wild plants on the Indian subcontinent, became one of the first oils extracted by early civilizations, and traveled westward to Babylon and Egypt before heading east along the Silk Road to China. At each stop, cultures found new uses for it, from Ayurvedic massage oil to Egyptian medicine to the toasted finishing oil drizzled over Korean bibimbap. The same chemical stability that made it valuable to Bronze Age traders still makes it a pantry staple today.