1. Assemble all ingredients. Cook the dal and keep ready. Remove the stalks from the Betel leaves, cut them to big bits, chop the tomatoes and keep aside.
   
2. In a blender put in the cut Betel leaves(reserve 1 for garnish), 2 chopped tomatoes, and green chilli and puree them smooth.
   
3. In a 1 litre vessel put the remaining 3 chopped tomatoes and the Betel-tomato puree and pour 3 cups of water. Put the vessel on the flame. Now add Rasam powder, Salt, turmeric powder, asafoetida and bring to a boil on medium flame. Keep boiling until the raw smell of the rasam powder and the Betel leaves goes away. This takes approximately 7 minutes on medium flame.
   
4. Now mash the dal nicely, if the dal has retained water, reserve it. Pour the dal into the boiling Rasam mixture, follow it up with the reserved dal water and add 2-3 more cups of plain water, and start boiling again on low flame.
   
5. Around about 10 minutes of boiling on a low flame the Rasam should start frothing up and rising in the vessel. When it starts coming towards the brim, add lemon juice and put off the stove immediately.
   
6. In a tempering Kadai heat 2 tsp of ghee. when it heats up put the mustard seeds into it, as they crackle add the asafoetida and the roasted cumin-pepper powder. Put off the flame and then add the curry leaves. Drop this tempering into the Rasam and serve hot with hot rice and ghee or follow any of the serving suggestions given above.
   
   

Put the dal in a vessel and cook it in the pressure cooker. I used pot in pot method, you can use whichever is convenient. The dal should have cooked well. Remove the stalks from Betel leaves, reserve one leaf for garnish and put the remaining in a blender, put 2 chopped tomatoes and the green chilli into the blender too, and grind them to a smooth puree. Chop the remaining 3 tomatoes into big cubes and put them in a 1-litre vessel. Add the Betel leaf-tomato puree also to this vessel and pour 3 cups water(1 cup =150 ml). Put the vessel on a medium flame and add the Rasam Powder, followed by turmeric powder, asafoetida and salt. Boil the mixture until the raw smell of the Betel leaves and tomatoes is gone(around 7 minutes from boiling on medium flame). Now separate the water from the cooked dal and reserve. Mash the dal nicely with the back of a ladle. Pour the dal into the boiling mixture followed by the reserved water and add 2 to 3 cups of more plain water. Now continue to boil the mixture on a low flame until the Rasam froths up and boils and starts rising in the vessel( around 10 minutes on low flame). Don’t let it to overflow. When it rises up squeeze the juice of 1 lemon and put off the flame immediately. Now take 2 tsp ghee in a small tempering Kadai and heat. Add mustard seeds, as they crackle add the Asafoetida powder, roasted pepper-cumin powder and put off the stove. Now add the curry leaves to the ghee, and pour the tempering into the Rasam. Garnish with finely cut Betel leaves(only 1 leaf will do) and coriander leaves. The yummy Vetrilai Rasam is ready to slurp. Enjoy and Bon Appetit.

Serving suggestions: Just as a soup, with hot rice and ghee, with Oats porridge(try this it tastes yummy).

Sometimes I also pour it on my chapatis while hot.????