Cook the corn(cooking in advance is not necessary if using most of the frozen corn which cooks very fast) and make a coarse paste of corn.
Make a coarse paste of coconut, green chillies, coriander leaves, asafoetida and salt.
Add the paste to corn.
Make small balls of the mixture, give it a slightly elongated shape.
Line them in a cooker vessel or plate and steam them for 10mins.
Serve hot.
Notes
Add spices like garam masala or coriander-cumin powder for a slightly spicy version. Bind the balls well by pressing them to make sure they don't fall apart.