Add oil and heat

When the oil turns hot add mustard seeds and splutter

Add curry leaves, green chilli, and chilli flakes; mix well

Furthermore, add garlic and saute till they change color

Add onion and saute till onion turns translucent

Furthermore, add chilli powder; mix well and cook for a minute

Add beans; mix well

Furthermore, add the required salt and water; mix well

Cover and cook for 7-9 minutes; until beans are cooked

Check  salt and add if required

Open cook for 2 minutes