In a mixing bowl take 1.5 cup Greek yogurt, mango jam, and whisk well. Keep aside.
In another bowl take the rest of Greek yogurt, condensed milk (milkmaid), a pinch of cardamom powder, and whisk.
Now take a serving glass and make an even layer of aam doi (mango yogurt mixture) at the bottom. Keep in the refrigerator for 2-3 minutes for the set.
Next, take out the glass from the refrigerator and over the aam doi layer make another layer of mishti doi (yogurt condensed milk mixture). Again keep in the refrigerator for 2-3 minutes for the set.
Similarly make some more layers till reaches the brim of the glass, else the layers can be slightly thick like mine.
After layering, keep the serving glass in the refrigerator till serving.
At the time of serving, take out from the refrigerator, sprinkle some chopped nuts and serve !