Soak the dal in water for 1 hour. Then add salt, ginger and red chilli and grind in a mixer. Mix the Chopped onions, curry leaves, coriander and make it into small ball. Then fry all these small balls in oil and keep it aside.
Now, put 1 spoon of oil and add aniseed. Then add onion, tomato, garlic and fry for a while. Then add the tamarind water (tamarind paste + 2 cups of water), salt and sambar powder.
When all these boils just add the fried balls in this and let it boil for another 10 minutes. Garnish with coriander leaves. Kola oorundai kolambu is ready to serve.