Rinse colocasia very well in the water and pressure cook them by adding 2 cups of water till 2 to 3 whistles or for about 10 minutes.
Remove them from cooker when the pressure settles down, peel and slice them. Keep aside.
In a pan heat oil and add carom seeds and sauté them till fragrant.
Add the sliced colacasia, stir and sauté for 5 minutes on a low flame.
Then add cumin, coriander, chilli powders and salt. Mix well.
Sauté and flip each piece to get even roasting.
Remove from the flame and transfer to serving bowl.
Serve as a side dish with steamed rice.