Heat oil in a pressure cooker. Add the garlic, onion and potato with a pinch of salt and cook for five minutes.

Add the rest of the ingredients, give a good mix and close the lid. Pressure cook for three whistles on high. Switch off and allow the pressure to go on its own.

Open the lid and using a hand blender, blend the soup till desired consistency. I kept it a little chunky but you can make it smooth.

Adjust seasoning and serve with a garnish of coriander leaves.