Soak 1 lemon sized tamarind in 1 cup water.
Crush it well and set aside. Squeeze well to extract pulp.
Crush 7 small sized garlic using hand mortar and pestle and Set aside.
To a mixer jar add 1 teaspoon cumin seeds, 1 teaspoon pepper, around 5 curry leaves, 1 red chili.
Grind it to a coarse mixture and set aside.
Take 2 medium sized tomatoes in a mixer.
Grind it coarsely and set aside.
Add it to a sauce pan.
Strain and add tamarind pulp.
Add 1 cup water to mixer and to it.
Boil it for 5-7 minutes until raw smell leaves. Switch off and set aside.
To a pan add 1 tablespoon oil heat it - add 1 teaspoon mustard seeds let it splutter. Then add 1/4 teaspoon hing, few curry leaves and 1 green chili.
Add crushed garlic along with prepared spice powder.
Saute for a minute.
Add tomato tamarind water.
Add salt to taste.
Add 1 teaspoon jaggery powder.
Add around 2 cups water, adjust accordingly.
Now keep the flame in low and let it start to boil.
When it starts to froth and boil add 2 tablespoon coriander leaves.
Switch off and close tightly with a lid to lock the flavor.
Simple and tasty rasam is ready.