Wash lentils well and then add to the water and put on to boil in a medium sized pan.
Add the asafoetida, turmeric and salt and cook on a low heat for about 15 minutes or until the lentils are tender.
Skim the lentils as you notice a scum forming.
Slice the onion, garlic and ginger. Set aside.
Meanwhile heat a heavy based frying pan until hot. Add the cumin seeds and 'pop' them.
Then add the oil.
Next add the onion and cook for 2-3 minutes.
Add the garlic, ginger and cook for a further couple of minutes.
Then add the dry spices and cook for another couple of minutes.
Add the cooked lentils to the frying pan and continue to fry for a further 3-4 minutes.
Take off heat add fresh coriander, check seasoning and serve.