Tarka literally means Tempering. This is basically a process by which the aroma and flavour of spices and herbs is imbided in the oil which, when mixed with the dish makes it delicious. The most common usage is Dal tarka. It is quite popular in Northern India like Uttarpradesh and Punjab. Dal tarka is primarly a dish of mixed pulses and a tarka of tomatoes, coriander leaves and spices are added to make it delicious.Egg Tarka is an addition of egg in the same recipe to sooth the nonvegetarian appetite as well as enhance its protein value.