Heat oil in a kadal, add curry leaves, dry chillies, mustard seeds.
When it begins to pop, reduce the flame and add the green chillies, chana dal and urad dal and wait till they brown a bit.
Add the chopped beetroot and salt and mix well, reduce flame, sprinkle 1/2 a cup of water, cover and cook on low till vegetable is cooked and the water has dried up.
Add grated coconut just before removing from fire.