South Indian Prawn Gravy | Eral Kulambu Tamil Style

Marinate the cleaned prawns with 1/4 teaspoon turmeric powder, 1/2 teaspoon red chilli powder, a pinch of salt, and 1 teaspoon ginger garlic paste. Mix well and set aside for at least 15 minutes while you prepare the other ingredients. This marinade removes any raw smell and helps the spices absorb into the prawns for better flavour.

Prepare the special ground paste by adding grated coconut, black peppercorns, cinnamon stick, and cloves into a blender. Grind to a smooth thick paste adding 2 to 3 tablespoons of water as needed. This freshly ground coconut masala paste is the heart of this recipe and gives the gravy its signature richness and thick body. Set this paste aside.

Extract tamarind juice by soaking the tamarind ball in half a cup of warm water for 10 minutes. Squeeze well with your fingers to extract all the pulp, then strain through a sieve to remove seeds and fibres. Keep the tamarind water ready for adding later in the cooking process. This adds the beautiful tangy balance to the rich coconut gravy.

Heat sesame oil or coconut oil in a heavy-bottomed kadai over medium flame. Once the oil is hot, add mustard seeds and let them splutter. Then add fennel seeds, dried red chillies, and fresh curry leaves. Let them sizzle for 30 seconds until fragrant. The sesame oil adds an authentic South Indian depth of flavour that is hard to replicate with any other oil.

Add the finely chopped pearl onions (shallots) to the tempered oil. Saute on medium flame for 8 to 10 minutes, stirring occasionally, until the onions turn golden brown and soft. Pearl onions are preferred over regular onions in Tamil prawn gravies as they add a natural sweetness and authentic coastal flavour. Do not rush this step as well-cooked onions are the base of a great gravy.

Add the remaining ginger garlic paste and slit green chillies to the golden onions. Mix well and cook for 3 to 4 minutes on medium flame until the raw smell of ginger and garlic completely disappears and the mixture turns aromatic and slightly golden. Stir frequently during this step to prevent sticking to the bottom of the pan.

Add the finely chopped tomatoes to the pan. Sprinkle a pinch of salt to help the tomatoes cook faster. Cook on medium flame for 6 to 8 minutes, mashing the tomatoes gently as they soften, until the entire mixture becomes a thick paste and the oil starts to separate from the sides. This is a very important step that builds the full flavour foundation of the gravy.

Add the remaining turmeric powder, red chilli powder, and coriander powder to the tomato onion masala. Mix everything together thoroughly and cook the dry spices for 2 to 3 minutes on low to medium flame, stirring constantly. Cooking the spice powders in the oil removes their raw taste and activates their full flavour and colour into the gravy base.

Add the freshly ground coconut masala paste to the pan. Mix well with the cooked tomato onion masala. Cook this combined paste on medium flame for 5 to 6 minutes, stirring continuously, until the coconut masala is well roasted, turns slightly darker in colour, and the oil begins to separate around the edges of the mixture. This roasting step is key to a deeply flavoured gravy.

Pour in the strained tamarind water and add one cup of plain water. Mix everything together and bring the gravy to a gentle boil. Taste and adjust salt at this point. Let the gravy simmer on low flame for 5 minutes, allowing the tamarind to cook out its rawness and the flavours to blend together beautifully before adding the prawns.

Add the marinated prawns to the simmering gravy. Stir gently to coat every prawn with the rich masala. Cook on medium flame for 6 to 8 minutes only. Do not overcook the prawns as they turn rubbery very quickly. The prawns are perfectly done when they turn pink and curl slightly. If the gravy is too thick, add a little more water and simmer for one more minute.

Finally, add a fresh sprig of curry leaves and chopped coriander leaves. Give the gravy one gentle stir and switch off the flame. Let the prawn gravy rest covered for 5 minutes before serving. This resting time allows the prawns to absorb all the beautiful masala flavours. Serve hot with steamed white rice, chapati, parotta, or soft idiyappam.