Peel and dice fresh mango into rough chunks, or measure frozen mango straight from the freezer.
Add mango, yogurt, milk, honey, cardamom, rose water if using, salt, and ice to the blender.
Blend on high for 45 to 60 seconds until completely smooth, creamy, and frothy.
Taste and adjust — more honey for sweetness, more cardamom for spice, more milk for thinner consistency.
Pour into two tall chilled glasses. Dust with cardamom, add saffron strands or rose petals if using, drizzle with honey, and garnish with a mango slice. Serve immediately.