1. Wash and soak rice in salted water for 30 minutes.
2. Drain rice in colander, keep water aside.
3. Heat oil in a heavy saucepan.
4. Add urad dal, seeds, cashews, stir till spluttering.
5. Add chillies and curry leaves. Stir, add rice.
6. Stir very gently, with a wide spatula till oil coats rice evenly.
7. Add coconut milk, 1 1/2 cups drained water. Add salt, keeping in mind the water was salted.
8. Bring to a boil, reduce heat, simmer covered.
9. Stir occasionally. When done 3/4, add lemon.
10. Mix very gently. Simmer till done and all water evaporates.
11. Add more water in between if required.
Garnish with coriander and coconut before serving.
Serve hot with raita, kadhi or rasam.