First of all, soak 2 cups whole urad dal overnight or for 6-8 hours. After soaking, drain the water and put the soaked dal in the pressure cooker. Add salt to taste along with enough water to boil. Then let the dal boil for three to four whistles. Meanwhile, place a kadhai on medium flame and add 4-5 tbsp butter to it. When it melts, add ginger-garlic paste and fry well till the raw smell of garlic goes away. Now add 1 1/2 cups tomato puree to the kadhai and mix well. Let the puree cook for 2-3 minutes. By now the dal would have boiled. Open the lid and put the boiled urad dal in the pan and mix everything well. Then add 1 cup of water to this mixture and let the dal cook for 4-5 minutes. Now add 1 tsp cumin powder, 1 tsp coriander powder and 1 tsp red chilli powder to the pan and mix well. Cook the dal for 4-5 minutes. finally, add 1 cup fresh cream and 2 pinches of garam masala and mix well once again. Put the lid on the pan and let the dal cook for 15-20 minutes or maybe 30 minutes. Keep stirring occasionally so that it does not stick to the bottom. Now turn off the gas and garnish with chopped green coriander. Dal Pakhtuni is ready to eat, you can eat it with jeera rice, naan or paratha with pickle and papad.