- Using green pumpkin which is less sweet and yellow green from inside is better for this recipe. 
- Chop it into bite-sized pieces. Do not peel it. 
- bring mustard oil to a smoking-hot temperature. Now add asafetida, cumin seeds, nigella seeds, mustard seeds, fennel seeds and fenugreek seeds. This mix of spice is also known as panch phoron. 
- Once the seeds splutter, add green chili and ginger. Mix in spices: corainder powder, red chili powder, and turmeric powder. Mix well till the spices are roasted and leave aroma. 
- Now add chopped pumpkin and salt. Mix well. 
- Cover the pan and allow the pumpkin to cook for 5-10 minutes still slightly tender. 
- In the meanwhile, strain the soaked tamarind pulp. Set aside. 
- Remove the lid, and add strained tamarind and crushed jaggery. If you wish to retain the shape of the pumpkin pieces, mix gently otherwise the kaddu will mash up. 
- Allow the pumpkin to cook for another 3-4 minutes without covering till the jaggery dissolves. 
- Add garam masala and garnish with fresh coriander. 
- Serve hot with pooris or chapati.