Dishoom's House Black Daal in an Instant Pot

Name: Dishoom's House Black Daal in an Instant Pot
Prep time: 10 min
Cook time: 4 h 50 min
Total time: 5 h
Cuisine: Asian, Indian
Ingredients: 300g whole black urad daal; 12g garlic paste (roughly 4 cloves); 10g ginger paste (roughly 1 heaped tablespoon); 70g tomato purée; 8g fine sea salt; ⅔ tsp deggi mirch chilli powder (or ⅓ tsp normal chilli powder); ⅓ tsp garam masala; 1 tsp vegetable oil; 90g unsalted butter; 90ml double cream; a few sprigs of coriander (optional); 1 black cardamom pod; 2 cloves; 5g black peppercorns; 2 large cinnamon sticks; 10g coriander seeds; 5g cumin seeds; 4g fennel seeds; 2g star anise; 1 bay leaf; 2g mace blades; 10g poppy seeds; 2g dried rose petals (I use Bart); large pinch of saffron (optional); grated nutmeg (optional)