Wash and peel the raw bananas and chop it into thin slices as shown in the picture. Keep the chopped slices in a bowl filled with water untill its ready to use. This will prevent blackening.
Drain the water . To the raw banana slices add salt, turmeric powder ,chilli powder and rasam powder.Toss it and mix it well such that the masala gets coated well to the slices .
Heat oil in a pan and add mustard seeds and urad dal . When the mustard seeds splutter add curry leaves .
Later add the coated raw banana pieces to the pan and toss them gently .. Keep the flame on low and stir in between . When the raw banana is cooked .. sprinkle gramflour .. toss gently such that it gets coated well . Add 1-2 tsp of oil and let the raw banana pieces get nicely fried on low flame .
Vazzakkai varuval is ready to serve. Tastes awesome as side dish along with dal / rasam / curd rice .
you can increase or decrease spices based on your preference .