1.Wash ,string and cut beans in to fine round pieces .

2. Chop onion and green chilies .

3. Heat oil ,add mustard seeds .

4. When mustard seeds crackle ,add chopped onion ,green chillies ,and curry leaves .Saute .

5. Add sliced beans ,salt and enough water to cook beans.

6. Cook till beans are done and all water has evaporated .

7. Add grated coconut ,cook a little longer ,stir well and remove from fire . Serve hot .