Cook the lentils with the turmeric and stock for 8 minutes in the instant pot.
Heat the seeds in vegetable oil until they start to pop.
Add the onion and sauté until soft.
Add the garlic, ginger and chilli and sauté 1 minute more.
Add the remaining spices and sauté 1 minute more.
Add the passata and cook gently for 15 minutes.
Add the lentil mixture and coconut milk and return to the boil.
Season and add the garam masala just before serving.
