Soak cashews, almonds, and walnuts in water for a few hours or overnight to soften them.
In a blender, combine soaked cashews, almonds, walnuts, dates, figs, fennel seeds, and makhana.
Add milk to the blender and blend until you get a smooth consistency.
If the smoothie is too thick, you can add more milk to reach your desired consistency.
Finally, add ice cubes and blend again to make the smoothie chilled.