For the paste:
Heat one teaspoon oil over medium heat, add mustard seeds and fenugreek seeds.
Add chopped shallots, 2 slit green chillies, peeled garlic and fry till they are translucent.
To this add chopped tomato pieces and sauté till they are soft.
Add sambar powder and fry for a minute.
Add some coriander and curry leaves and turn off the heat.
Once the mixture cools down, transfer to a blender and grind to a coarse paste.
Mix this with “dry ingredients for the paste”.
Marinating:
Drain the water. To the cut raw banana pieces add the marinade and mix.
Set aside for 15 minutes.
Frying:
Heat 2 tablespoons of oil over medium heat in a wide flat bottomed skillet.
Temper with mustard seeds and arrange marinated pieces in a single layer.
Cook over medium high heat until golden brown on both sides.
Adjust salt, sprinkle rice flour, add curry leaves and fry till they turn golden brown with a crisp exterior.
Serve with rice and sambar or rasam.