In a blender, add grated coconut, roasted methi seeds, mustard seeds, chilies, turmeric powder, cumin seeds, tamarind, and salt.
Grind everything to a smooth paste, adding a little water as needed. The paste should be thick and creamy.
Heat oil in a pan or kadai over medium heat. Add mustard seeds and let them splutter.
Add asafoetida and curry leaves, and sauté for a few seconds.
Add the diced Raw banana and sauté for a couple of minutes.
Reduce the heat to low and add the prepared sasive paste to the pan. Mix well so that the raw banana is coated with the paste.
Add water to achieve your desired gravy consistency. Start with 1/4 cup and adjust as needed. Cover the pan and let it simmer for about 5-7 minutes or until the raw banana is tender. Stir occasionally.
Taste the sasive curry and adjust the salt and spice level if needed. Simmer for a couple of more minutes to blend the flavors.
Once the raw banana is cooked and the flavors have melded, remove the pan from heat.
Udupi special sasive is typically served as a side dish with steamed rice