Boil the dal, 4 cups water, salt, turmeric, red chilli powder and sugar together till the dal is completely tender. You want it to look fairly smooth
Add the juice of one lemon and taste, if it is not overtly sour with well rounded notes of spice and salt then adjust seasoning and add more lemon juice.
Baghaar/ Tadka / Tempering
Heat about 3 tbsp of oil in a small frying pan
Add the dried red chillies and cumin seeds
Cook on medium heat till the chillies are black on all sides
Carefully add in your sprig of curry leaves (they will splutter!)
Immediately pour your baghaar over the dal
Notes
While I am a daal roti kinda girl this one if unquestionably best suited to a steaming plate of rice!