Tadka (also called chaunk, tarka, or tempering) is one of the foundational techniques in South Asian cooking — the process of blooming whole spices in hot fat to extract their fat-soluble flavour compounds before anything else enters the pan. When cumin seeds, a bay leaf, or a dried chilli hit hot ghee or oil, they begin to sizzle and release their essential oils within seconds. These compounds are soluble in fat but not in water, which means frying them in fat first carries deep, complex aromas through every element the fat subsequently touches: the onion, the lentils, the rice. In Ismail's khichuri, the tadka of cumin seeds, bay leaf, and dried red chilli in ghee provides the aromatic foundation before the onion is even added. The visual cues: seeds should sizzle immediately on contact with the fat — if they don't, the fat isn't hot enough — and a dried chilli should deepen visibly in colour within 20–30 seconds. Remove from heat briefly if anything begins to smoke.