Mix the Milk Base: In a large bowl, pour the colostrum milk. If using first-day colostrum (which is very thick and rich), stir in the regular whole milk to dilute it slightly. Add the grated jaggery to the milk and mix well. Keep stirring until the jaggery dissolves completely (you can also warm the milk gently to help the jaggery melt). Once dissolved, add the cardamom powder and mix. (If any impurities from the jaggery remain, you can strain the mixture through a sieve.)

Prepare Steaming Dish: Grease a deep stainless steel plate or bowl (or lidded container) with a few drops of ghee or oil. This will help the pudding release easily after cooking. Pour the sweetened milk mixture into the prepared dish. If using saffron, sprinkle the strands on top. Also sprinkle the tiny pinch of nutmeg or black pepper powder on the mixture for subtle flavor (optional).

Cover: Cover the dish with a lid or aluminum foil. This is important to prevent any water droplets from the steam from falling into the pudding and ruining its smooth texture.

Steam Cook: Prepare your steamer setup – you can use an idli steamer, pressure cooker (without whistle), or any large pot. Add about 2 inches of water to the steamer and bring it to a simmer. Place the covered dish on a trivet or stand inside the steamer. Close the lid. Steam on medium heat for about 25–30 minutes. Avoid high heat, as vigorous boiling can cause water to splash into the pudding. After about 25 minutes, carefully open and insert a toothpick or knife into the center of the pudding; if it comes out clean, the kharwas is set. If not, steam for another 5–10 minutes and check again.

Cool and Set: Once the pudding is cooked and has a slight jiggle but is firm to touch, turn off the heat. Remove the dish from the steamer using tongs (be careful, it’s hot). Let it cool to room temperature. As it cools, the pudding will firm up further. For the best texture, once cooled, refrigerate the kharwas for at least 2 hours (cover it while refrigerating). Chilling helps it set into a nice sliceable custard.

Serve: When fully set and chilled, run a knife around the edges of the pudding to loosen it. Invert it onto a plate (or you can even serve directly from the bowl). Cut the kharwas into squares or wedges. Serve chilled for the classic feel – the cool, silky texture is unbelievably comforting. You can also enjoy it slightly warm if you prefer, but traditionally it’s served cold, often as a treat after meals.