Heat oil in a pressure cooker. Sizzle the garlic. Saute the onion till soft.
Add in the turmeric and red chilli powder and saute for a minute.
Add the potato, broccoli and dill leaves and toss it up well.
Add the coconut milk, water, garam masala powder, salt and pepper.
Close the lid and pressure cook on medium-high flame for three whistles.
Switch off and allow the pressure to go by itself.
Open the lid, using a hand held blender, blend the soup till smooth.
Serve hot or cold with a garnish of coriander leaves.