To prepare the Pumpkin Dahl, start by washing the lentils well. Cover with fresh water and soak for 15-20 minutes.
Add turmeric to the lentils and cook in a pressure cooker or instant pot for 8-10 minutes on full pressure. Open when the pressure has subsided and keep aside.
The Masala
Heat the oil in a saute pan. Fry cumin seeds until they splutter.
Add the ginger, garlic, onions, chillies and tomato and fry on a high flame for 1-2 minutes. Reduce flame and cook for 4-5 minutes until onions soften and tomatoes are pulpy.
Stir in the pumpkin puree, spice powders and salt, combine well.
To this, add the cooked dal and bring to a simmer, thinning with some water if required.
Turn off the flame and mix in lemon juice.
Garnish
Remove into a serving bowl and garnish with more coriander, sliced chillies and ginger juliennes.