To make South Indian coconut chutney, firstly pour all the ingredients except the tempering material into the mixer grinder with 1/2 cup of hot water and grind it. Now heat the oil in a small pan. Add the mustard seeds, urad dal, curry leaves and let it cook for 15 seconds. Add this tempering to the chutney. Now add lemon and salt to it. Mix and serve. Serve coconut chutney with ghee dosa, idli or rava dosa for breakfast.