Tamil Nadu — particularly associated with Brahmin vegetarian cooking and the Onam sadya tradition in Kerala
Kootu occupies the space between poriyal (dry) and sambar (wet) — it contains both vegetable and cooked lentil (usually chana dal or toor dal), bound by a freshly ground coconut paste. The coconut is not added raw as in poriyal but is ground with roasted spices (coriander, dried red chilli, black pepper, cumin) into a smooth paste, then cooked into the vegetables and lentils until the paste coats everything and the moisture reduces to a thick, almost dry consistency. The vehicle vegetable varies widely: raw plantain, yam (suran/senai), ash gourd, colocasia — all starchy vegetables that absorb the coconut masala.
Served alongside poriyal and sambar in a rice meal. The lentil component provides protein weight; it functions as the substantial side dish of the traditional plate.
{"Cook the lentil and vegetable separately to their respective doneness — combining them raw and cooking together leads to uneven textures","The coconut-spice paste must be freshly ground — jarred coconut paste does not contain the volatile oils of fresh","Cook the paste into the lentil-vegetable combination for 5–8 minutes — the raw coconut and spice flavour needs time to mellow","Final consistency should be thick and almost dry — excess moisture indicates too much water was used in cooking the components","The tadka finish (mustard, curry leaf, dried red chilli) is added last"}
The ash gourd (white gourd, poosanikai) kootu made in Palghat-style Brahmin cooking is considered the reference version — the ash gourd's high water content makes it more forgiving, and it absorbs the coconut masala beautifully without becoming mushy. A pinch of jaggery stirred in at the end rounds the bitterness of the roasted spices.
{"Using coconut milk instead of ground coconut paste — produces a completely different dish; kootu is not a wet curry","Undercooking the ground paste — raw coconut taste is distinct and unpleasant","Using green cabbage or carrots — these are poriyal vegetables; kootu uses starchy tuberous or gourd vegetables"}