Roughly chop the four tomatoes and blend along with 1/2 cup water
In a deep pan, add ghee and once hot, add the mustard and curry leaves.
Once the mustard has popped, add 1/2 cup of hot water to the pan. (This is done ot prevent the tomato mixture from splashing around!) Reduce the heat to low.
Strain the tomato mix into the pan.
Return the pulp to the blender and blend the pulp again with 1/2 cup water.
Strain the tomato mix into the pan.
Repeat the above step with 1/4 cup water and discard the remaining pulp.
Add the Rasam Powder, Asafoetida, Salt and Tamarind paste to the pan.
Leave the rasam on low heat while you mash the dal with 1/2 cup of water. You can do this with the back of a spoon, a blender or just your hands.
Strain the dal and add only the water to the rasam.
Repeat this process with 1/2 cup of water.
Crush the garlic with a mortar and pestle or the back of a knife. Roughly chop and add to the rasam.
Check the consistency** and add a little more water if desired. Adjust seasoning.
Turn the heat up and let the rasam boil for about 2-3 minutes