Clean, wash and soak moong daal in cold water for half an hour.Discard the water. Once you are ready to cook the daal, heat oil in a thick bottom pan or kadai.
Add mustard and cumin seeds, once they crackle add hing and dry red chilli. Then add soaked daal, and minced chilli ginger. Mix well, then add red chilli powder, turmeric and salt. Once again mix well.
Add sufficient water to cook daal perfectly. Don't add too much water in the beginning, if you need then add later. Cover the pan with the lid and cook the daal on a low heat. Daal should not be mushy but cooked well and each daal should be separate. Once the daal is cooked add lemon juice and mix. Turn off the heat and garnish the daal with the coriander leaves. Serve hot with Gujarati Kadhi and Rice in a typical everyday Gujarati thali.