Wash ridge gourd with scrapper remove the edges. Take only this part to make chutney.
In blender blend these edges.
Heat oil in pan, add onion, green chili and garlic, saute till onion turns golden brown. Then add blended ridge gourd edges. Fry and stir well for about 3-4 min. Then add coriander and mix well. If require add 1/2 tsp water. Cover with lid cook for 3-4 min. Then add lemon juice mix well. Switch off the flame, and serve hot with chapati.