Wash and Soak 1/2 cup Toor Dal for 10 mins. Drain water and keep aside.
Pressure cook soaked and drained toor dal with 1 tightly packed cup of chopped spinach and 1 & 1/2 cups of water with turmeric and salt for 3 to 4 whistles.
Switch off gas. Allow pressure to release naturally before opening the lid.
Gently whisk or mash the lentils and prepare for tempering
Heat a pan, add 1 tbsp oil, mustard seeds, jeera and whole red chillies. Once mustard crackles, add finely chopped garlic and onion and sauté until onions are translucent.
To the pan, add pressure cooked dal + spinach and mix well. Allow it to simmer for a few seconds. Check seasoning and once the dal reaches a boil, switch off the heat.
Remove the dal into a serving bowl and prepare for 2nd tempering. Note - This is optional.
For the 2nd tempering, heat a pan, add 2 tsp ghee, some mustard seeds, jeera, whole red chilies, a pinch of hing or asafoetida.
Once the mustard crackles, add a pinch of kashmiri red chilli powder and immediately switch off the flame. Pour this tempering over the dal just before serving.