Tempering spices should generally be added at the end of the cooking process to preserve their aroma and flavor. Adding them at the beginning can cause them to burn and lose their potency.
Tempering, also known as 'tadka' or 'chhonk,' is a cooking technique used in Indian cuisine where whole spices are briefly roasted in hot oil or ghee to release their essential oils and enhance their flavor. This aromatic oil is then added to a dish. The timing of adding the tempering is crucial for optimal flavor.
When spices are added at the beginning of cooking and subjected to prolonged heat, they can easily burn. Burning not only diminishes their flavor but also introduces a bitter taste to the dish. By adding the tempering at the end, you ensure that the spices retain their vibrant aroma and flavor, infusing the dish with a burst of freshness. The hot oil quickly extracts the flavors without overcooking the spices.
The process typically involves heating oil or ghee in a small pan, then adding whole spices like cumin seeds, mustard seeds, dried red chilies, and curry leaves. Once the spices start to splutter and release their aroma, the hot oil is poured over the dish. This final step adds a layer of complexity and depth to the overall flavor profile.
To prevent splattering when adding the tempering to a dish with a lot of liquid, briefly cover the pot or pan immediately after pouring in the hot oil. This will contain the splatters and allow the flavors to meld together effectively.