In a large bowl, cover 200 g whole urad dal with twice the amount of water and soak for at least five hours — preferably overnight. Once soaked, drain the water and rinse thoroughly several times. Do a cursory check for small stones.
Add the drained lentils to a pressure cooker with 750 ml water, 3 Indian bay leaves, 2 black cardamom pods, 2 inch cinnamon, and ¼ teaspoon turmeric powder. Cook over medium heat for six whistles. Let the cooker depressurise.
Add 4 large tomato to a mixer grinder (or immersion blender) and pulse until you have a smooth paste. Set aside.
Heat 20g of your 60 g butter in a large, deep-sided saucepan over medium heat. Once the butter melts, add 3 garlic cloves and 1 teaspoon ginger. Saute until they become aromatic, then add the blended tomatoes, 1 tablespoon concentrated tomato paste, 1 teaspoon coriander powder, 1 ½ teaspoon red chilli powder, ¼ teaspoon cumin powder, and Sea salt to taste. Cook, stirring regularly, until the mixture becomes thick and butter releases from the sides.
Add the black lentils to the pan along with 450 ml water and 6 tablespoons double cream. Stir everything to mix well and turn the heat to low. Simmer for 1 ½ hours, stirring occasionally to stop the lentils sticking. Once simmered, add another 20g butter and stir through.
Place a small metal bowl (vati) on the lentils. Add 1 piece natural charcoal to the bowl and carefully pour over 1 teaspoon ghee (melted). This will instantly make the charcoal smoke, so cover the lid and allow it to infuse with the dal for around 30 seconds. Once done, remove the bowl with tongs.
Pour the dal bukhara into bowls and top with Fresh coriander, a drizzle of cream, and the remaining 20g butter (split between bowls).