Clean and wash the green gram split. Scrape the ginger and roughly chop half of it and julienne the rest. Cook the dal with 4 slit green chillies and chopped ginger in 3 cups of water till just done.
The dal should not get mashed. Heat oil add asafoetida, cumin seeds and saute till they crackle, immediately add red chilli powder, turmeric powder and coriander powder and saute for a minute.
Add the cooked dal and salt and gently mix. Cook on low heat taking care that the dal does not get mashed. Finish the khilma with garam masala powder, lemon juice and garnish with chopped coriander leaves, julliennes of ginger and slit green chillies.