- Wash tapioca in water well to remove mud and cut them into medium size pieces. Peel off using a sharp knife and cut into small pieces. Wash the tapioca pieces again in water and add them to a wide pan with plenty of water. Cook until tender and drain water. You can pressure cook them instead, cook for 2 whistles and wait until steam has released completely. Add the grated coconut, turmeric powder, cumin seeds and green chilli in a blender and grind coarsely. Cook the drained tapioca pieces adding the coarse mixture on low flame until the raw smell of the mixture goes off. This will take 5-6 minutes. Add salt to the mixture and mash well using a potato masher or wooden ladle. Keep aside. Heat oil in a pan. Splutter mustard seeds. Add dry red chilli and curry leaves. Pour the seasoning over mashed tapioca and mix everything well. Serve hot.