Heat oil in a heavy-bottomed pan. Once hot, add the mustard seeds and fennel seeds. When the mustard seeds splutter, toss in the green chili, bay leaf, cinnamon stick, and cloves.Also add Curry leaves. Fry for a few seconds until fragrant.
1 tsp Mustard Seeds, 1 tsp Fennel Seeds, 1 no Bay Leaf, 1 inch Cinnamon (Pattai), 2 nos Cloves (Krambu / Lavang), 1 slit Green Chilli, 1 spring Curry leaves, 2 tbsp Oil
Sauté the finely chopped onions in the pan until they turn translucent. This will take about 5 minutes. Then, add the finely chopped tomatoes and turmeric powder. Give everything a good mix and let the tomatoes cook until they soften and become mushy. This will take another 2-3 minutes.
1 no Onion, 1 chopped Tomato, ½ tsp Turmeric Powder
Maintain medium heat and allow the onion-tomato mixture to simmer until the tomatoes soften and become mushy, about 5-7 minutes. This will also help to release the natural sweetness of the tomatoes. Next, add the tamarind water and salt. Bring the mixture to a boil, then reduce heat and simmer for an additional 5 minutes. This extended simmering time will help to mellow out the raw tamarind taste.
1 tsp Salt
Once the tamarind flavor has mellowed, stir in the coriander powder and chili powder. Adjust the chili powder according to your preferred spice level. Bring the kuzhambu to a boil, giving everything a good mix.
1 tsp Coriander Powder, 1 tsp Red Chili Powder
While the tamarind mixture simmers, prepare the coconut paste. Combine the grated coconut, poppy seeds, fennel seeds and cumin seeds in a blender or food processor. Add a little water, just enough to facilitate grinding, and blend until you achieve a smooth paste. Set this paste aside until the tamarind mixture is nicely cooked.
¼ cup Grated Coconut, 1 tsp Cumin Seeds, 1 tsp Poppy Seeds, 1 tsp Fennel Seeds
Once the tamarind flavor has mellowed and the raw smell is gone, stir in the coconut paste. Bring the kuzhambu to a simmer and adjust the consistency with water if desired. It should be a medium-thick gravy. For the best texture, gently add the fried pakodas just before serving. Simmer for 2 minutes to allow the flavors to meld. Garnish with fresh coriander leaves and turn off the heat. If you're planning to serve this dish later, wait to add the pakodas until 15 minutes before serving to prevent them from becoming soggy.