Cut the tapioca into cubes. Cook the washed tapioca in a large pan along with salt until it is soft and drain it.
Heat coconut oil in a pan, splutter mustard seeds and cumin seeds. Add pepper corns, curry leaves, dry red chillies and saute it. Add small onions, ginger-garlic, green chilli and saute well.
Then add grated coconut and saute it again. Add tapioca and mix gently. Thani Nadan Kappa Ularthiyathu is ready.
Serve hot with beef curry, fish curry, meen mulakittath or mulaku chutney.