Clean the sweet pumpkin and cut them to bite sized pieces. Cook them with turmeric powder and salt until its soft and mushy. add only enough water to cook.
Grind coconut, cumin seeds and red chilies to a fine paste
Once pumpkin is cooked and mash it slightly or leave it as such if u like bites here and there.
Add the ground coconut paste to it, Mix well and give it a boil.
Meanwhile, fry the grated coconut in coconut oil until it turns reddish brown.
Add the fried coconut to the curry, mix well and switch off the stove.
Prepare the seasoning: Heat coconut oil, splutter mustard seeds, curry leaves, cumin seeds and red chilies. Add it to the curry and mix well.
Notes
Fry the coconut until reddish brown. Take care not to burn it. That changes the flavor of the eriserry.