This recipe focuses on the easy version, ideal for days when you want a light, healthy rasam that can be prepared quickly.
Place the sauce pan again on medium heat. Add 1 tablespoon oil.
When oil is hot, add mustard seeds. When mustard seeds crackle rapidly, lower the heat and add 4 cups of water.
Add the garlic pieces, turmeric, curry leaves and 1 tsp salt to the water. Stir with a large spoon or ladle. Cook for 5 minutes.
Add ground pepper, cayenne powder, cumin powder, coriander powder and hing to the pan.
Mix the rice flour in 2 tbsp of cold or lukewarm water and mix well. Add this to the garlic mixture in the pan.
Add 2 tsp tamarind paste. Stir the contents.
Cook for 5 more minutes, or until garlic is soft and cooked well. Don't overcook the garlic.
Add the chopped cilantro. Mix well.
Taste a little. Add more salt and tamarind, if necessary.