Take Raw Banana, cut them top and bottom off, Put them in a steamer, i used my rice cooker and steam them for 10 mins till they are soft.Let them cool a bit.Peel them and mash them.
Now heat oil in a sauce pan, add in mustard, urad dal, cumin, red chilli and let them sizzle for a min.
Add in onions and saute for a min.
Add in green chilli, curry leaves, ginger and saute for a min.
Add in salt and toss well.
Add in the mashed banana and give a good mix.Saute for 5 mins, so it gets coated with all the spices.
Add in coconut and give one final mix. Switch off them flame.