At first cut both edges of potol or pointed gourds and slightly peel the skin. Then with a knife slit in between the halves of it so the spices and the gravy can easily enter it while cooking.
First, prepare a paste in the mixing bowl by adding yogurt, ½ tbsp or more turmeric powder, red chili powder, Kashmiri red chili powder, and coriander powder. Mix everything thoroughly, adding a little bit of water to create a smooth paste. Beat all the ingredients together and set it aside.
Next, heat 3 tbsp of mustard oil in a wok until it becomes hot. Add the potol or pointed gourds into the hot oil and stir-fry them over medium heat.
Sprinkle ½ tbsp of salt and ½ tbsp of turmeric powder and continue frying until the gourds turn light brown in color. Flip the pointed gourds to fry them evenly on all sides.(Pro tip: You can marinate the pointed gourds with salt & turmeric before frying and adjust the amount of oil as per your preference. Be cautious to avoid splattering when adding anything into the hot oil.) Once the pointed gourds are fried, remove them from the wok and set them on a plate. Add 2 tbsp of mustard oil to the same wok and heat it up.
Now, add all the whole spices like cumin seeds, bay leaf, dry red chili, cinnamon sticks, cardamom, and cloves. Sauté them for a few seconds until they release a pleasant aroma.
Then, add the chopped onions and continue stirring until they turn golden brown in color. Add the grated ginger and garlic and sauté for another 2 minutes until the raw smell disappears.
Now, add the previously prepared spice paste to the wok. Sauté everything and cook it over low heat. Add a little bit of water to the bowl containing the spice paste and use this spice mixed water to adjust the consistency in the wok. Stir everything well for 5 minutes until the oil starts to release.
Next, add the fried potol or pointed gourds to the wok and stir for 2 minutes. Add 1 tbsp salt and cashew paste. Rinse the cashew paste bowl with a little bit of water and add this paste mixed water into the curry. Stir everything thoroughly.
Pour 1 cup of coconut milk into the curry. Mix everything and cover it for 5 minutes.
After 5 minutes, uncover the wok and you will find that it is almost done. Now, add the remaining coconut milk and cover it again for 2 minutes.
Uncover the wok, and you will see that the korma is ready. Add 1 tbsp sugar, garam masala, and 1 tbsp ghee. Cover it with a lid for a few more minutes.
Finally, open the lid, and your Potol Korma or Parwal Korma is ready to serve.
Transfer Potol Korma to a serving bowl and serve it with steamed rice, roti or paratha.