Put the pieces of jackfruit in a pressure cooker with water. Cook for 2-3 whistles, or until the jackfruit pieces are tender but not mushy. Place aside.
In a wok or pan, heat the oil and fry the potato cubes with a little salt and turmeric. Set aside. Similarly, fry the boiled jackfruit chunks with salt and turmeric before setting aside.
Add the bay leaf and cinnamon stick to the oil, followed by the chopped garlic, and fry until the oil is fragrant.
Then, add the chopped onion, green chilli and cook until it is translucent.
After that, add the ginger paste and cook for a few minutes.
Next add all of the spice powders, including the turmeric powder, red chilli powder, and coriander powder, and mix well.
Cook the mixture with salt and tomato chunks until the raw scent is gone. After that, simmer the masala by adding 1/2 cup of water.
After that, mix the spices well with the chunks of fried potato and jackfruit. Then, add 2 cups of water, taste for salt, cover the pan with a lid, and let it boil for 5-7 minutes.
After turning off the gas, top the echorer dalna with ghee (optional) and bhaja masala powder, and serve immediately.