For the yellow dal layer, add all the yellow dal ingredients directly to the Instant Pot liner, mix well, and add the rack on top of that.
For the curried vegetable layer, add all the curried root vegetable ingredients to a short Pyrex container and toss. Place on the rack above the dal. (If you need to, you can wrap this layer in foil if you can’t fit two Pyrex containers above the dal.)
For the rice layer, combine the rice and water together in a short Pyrex container and place, uncovered, on top of the root veggie layer.
Cook on high pressure for 40 minutes. Let the pressure release naturally. Once the pressure indicator goes down, remove the lid and carefully lift out the pans.
Before serving, taste each component and add salt to taste.