Wash and drain the rice ada. Place it in a bowl, cover with hot boiling water, and leave for 20 minutes. Drain and rinse with cold water to prevent sticking.
Roast Ada
Heat 1 tablespoon ghee in a heavy-bottomed pan. Add the soaked ada and roast on medium flame for about 7 minutes, stirring continuously. Switch off and set aside.
Boil milk base
Add 6 cups of full-fat milk and ¾ cup of sugar into the Instant Pot. Set to SAUTE (MORE) and bring to a rolling boil.
Cook ada
Stir in the roasted ada. Close the lid, set the valve to SEAL, and cook on MANUAL LOW PRESSURE for 2 minutes.
Release and thicken
Allow a NATURAL RELEASE (~20 mins) or a QUICK RELEASE after 10 mins. Switch to SAUTE (NORMAL), adjust sugar if needed, and simmer until the payasam thickens to the desired consist
Garnish
In the same pan used for roasting ada, heat 1 tablespoon ghee. Fry cashews until golden, then add raisins until they puff. Pour this over the payasam, mix gently, and serve warm or chilled.
Notes
Use full-fat milk: Gives the richest texture and helps develop the natural pink colour when slow-cooked.
Roast ada in ghee: Drain the soaked ada and roast in 1 tablespoon ghee for 7 minutes on medium flame. This prevents sticking and adds flavour.
Add sugar later: Adding sugar after the milk reduces slightly improves caramelisation and gives a deeper pink shade.
Add a pinch of salt: Balances sweetness and enhances overall flavour.
Consistency check: For thicker payasam, cook longer until the ada floats on top. For a thinner version, add a splash of hot milk before serving.