chop the beans very fine,and cube the raw banana and keep in water until cooking...okie here's the recipe
temper the oil with mustard seeds,urad daal,chana daal,curry leaf,dried red chili,grated ginger and shallots cook till soft(make sure it does not brown)..
now add in the raw banana and coriander pwd along with red chili and turmeric pwd,cook 2 min then add the beans.
saute adding some salt then sprinkle some water and cook till soft ! to finish add a little grated coconut and then your done !