Wash and soak kantola in a bowl of water for some time, rub them well to remove any dirt sticking on the surface, slightly trim the edges and then chop into roundels or slices as per your preference.
If the seeds are hard , yellowish and mature then remove them .
Heat oil in a pan and add cumin seeds in it, when it start crackling add asafoetida , green chilies and turmeric powder.
Add the sliced kantola, stir fry for a minute and then add salt, mix well.
Cover with a lid and cook on low heat till almost done, keep stirring in betwen to check.
Now remove the lid add all the dry masalas and mix well.
Cook on low heat for about 2 minutes ,so the kantola and the spices roast well.
Switch off the heat and add chopped fresh coriander and serve.