To begin making the Watermelon Rasam recipe, cut watermelon into pieces and remove seeds. Add it to blender and puree it. Strain it to extract the fresh juice.

Soak tamarind in enough water and extract the tamarind juice.

Wash and pressure cook the dal adding enough water for 3 whistles, Turn off the flame.

Allow the pressure to release naturally. Open the lid and completely mash the dal. 

Take tamarind juice in a bowl, add watermelon juice to it and mix well. 

Now add crushed garlic and pepper, cumin mixture to the juice mixture and mix.

Add turmeric powder, chilli powder, rasam powder, Asafoetida and required salt to it. Mix well.

Pour this mixture to the cooked dal in a pan. Boil in medium flame adding little water if needed.

Meanwhile, heat ghee in another pan. Add mustard seeds and once it splutters, add the curry leaves. This is the tempering.

Once rasam starts boiling and becomes frothy. Switch off the flame and add the tempering. Squeeze the lemon juice and garnish with coriander leaves. It is ready to be served. 

To beat the heat, you can enjoy this delicious and flavourful Watermelon Rasam with Steamed rice, Beetroot Thoran with a dollop of ghee.