Clean and wash the tomatoes and cut a small portion of top and bottom sides of the Tomatoes as shown in the picture and keep them separately.
Clean, wash and cut (vertically) the Green Chilli
Roast the grated Coconut along with Peanuts and Sesame seeds in medium flame. When colour of the Coconut and Peanuts turn into golden/brown, put off the stove and allow to cool this mix for some time. Then grind it along with some water and keep this paste aside.
Heat Oil in a Cooking vessel/Cheenachatti, burst the Mustard seeds in this hot oil and then add Cumin Seeds, Fenugreek Seeds and Red Chilli pieces and stir it for 2 – 3 minutes.
After 2 – 3 minutes, add the chopped Onion and Curry leaves along with Salt and stir it further.
When colour of this mix turn into golden/brown, add Garlic paste and Ginger paste and stir the mix well.
Add the Green Chilli pieces, Coriander powder, Turmeric powder, Red Chilli powder and Cumin seeds powder also and stir it further.
After about 2 – 3 minutes, add the Coconut paste, Tamarind syrup and Jaggery along with required quantity of Water and stir it. Close the Cheenachatti/Cooking vessel with a plate and boil the mix for about 20 – 25 minutes at low flame.
After about 25 minutes, remove the plate covered the Cheenachatti/Cooking vessel, add the contents (juice along with the seeds) of Tomatoes into the boiled mix by pressing the Tomatoes (as shown in the picture) and then put the Tomatoes also into the mix and cook it for another five minutes in medium flame.
Tomato Saalan is ready. Garnish it with the chopped Coriander leaves and serve it along with Chappaathi/Poori or cooked Rice.