Wash bitter gourd thoroughly. Cut off both the ends, cut into half and make thin slices.
Heat a pan with oil, add the bitter gourd and begin to stir fry for 5 minutes.
Add salt, tamarind pulp and grated jaggery, mix well. Cover and cook on a medium flame until the bitter gourd is cooked well.
Add chopped onion, curry leaves and fry on a low flame. Keep stirring in between to prevent burning.
Add coriander, cumin, red chilli, turmeric powders and mix. Saute for 2 minutes.
Remove from the flame and transfer to a serving bowl. Serve with hot steamed rice.