Dry roast cumin, pepper. Powder this coarsely.
In a pan, heat 1 tsp ghee. Roast the moong dal till nice aroma wafts out. Transfer to a plate. Soak the moong dal in 1/2 cup of water for 20 mins. Pressure cook for 2 whistles with little water till soft and mushy, keep aside.
I would like to boil the soaked dal in an open pan for 15-20 till done, but not mushy (see pic collage here)
In a thick bottomed pan, add 2 TBSP more of rava / sooji and roast like you would roast for Upma on medium flame till aromatic. Add the crushed cumin and pepper powder from step 1 and roast for 1 more min. Cool
Bring 3.5 cups of water to a rolling boil, add a pinch of turmeric and add the cooked dal with the cooked dal.
When the mixture comes to a rolling boil, add the salt and turmeric, and the roasted sooji mixture in batches and slowly whisk to get a upma kind of consistency. Add 1 tsp more of ghee, mix and cook covered for 5-7 mins.
In a non stick pan, add the remaining ghee, fry cashew, asafoetida, grated ginger and curry leaves. Add this tempering to the pongal, check for salt and spices. Add any remaining ghee and mix well.
Serve hot with coriander - coconut Chutney / Tiffin Sambhar or even Gothsu like we did