Wash and soak 1 cup of kidney beans or rajma for 6 to 8 hours or overnight. Drain and set aside.
Set the Instant Pot to Sauté mode. Heat oil and add a pinch of asafoetida. Add cumin seeds , cloves, cinnamon stick, black cardamom, and bay leaves, and sauté for 30 seconds. Add the soaked rajma along with paprika, turmeric powder, ginger powder, fennel powder, salt, and 3 cups of water.
Close the lid and set the valve to seal. Cook on High Pressure for 35 minutes. Allow the pressure to release naturally. Check the beans for tenderness and mash a few to achieve a creamy consistency.
Set the Instant Pot back to Sauté mode. Add yogurt and Vaer Masala (if using), and mix well. Simmer for 5–7 minutes to thicken the curry.
For tanginess, amchur powder, or a squeeze of lemon juice. Serve hot and enjoy!