Peel and halve the sweet potatoes and place in the base of the instant pot with the milk and brown sugar.
Cover the base and cook on manual for 7 minutes and do a quick release.
Remove the whole cardamoms, mash the sweet potatoes into the milk. Add in the raisins
Turn on the saute more and cook for about 5 to 6 minutes, stirring frequently. At this point, the mixture should form a smooth fairly thick mass and move with the direction of the spoon.
Add in the clarified butter and cook for another 4 minutes.
Place in a serving bowl.
Garnish with slivered almonds and sprinkle the rose petals if using.