Wash and clean the gourd and grate it. Take out grated gourd in a vessel. Press the gourd and take out it's juice. Now in this gourd, add 3/4 cup of gram flour, 1 green chilli, 1/2 tsp ginger paste, 1/4 tsp turmeric powder, 1 tsp coriander powder, 1/2 tsp red chilli powder, less than 1/2 tsp Add salt, 1/4 teaspoon carom seeds and a little green coriander and mix well. Keep the mixture for 10 minutes so that the gram flour puff up. Add more besan if required.