Add the frozen mango, frozen pineapple, coconut milk, orange juice, and turmeric to a blender.
Blend on high until completely smooth and creamy.
If the smoothie is thicker than you prefer, add a little more orange juice and blend again until it reaches your desired consistency.
Pour into glasses and serve immediately.
Notes
Chill the coconut milk: Refrigerate the coconut milk before blending. Combined with the frozen fruit, it keeps the smoothie cold without needing ice.Using ice: For an especially cold smoothie, blend in a couple of ice cubes just before serving. Ice initially makes the smoothie colder and slightly thicker, but as it melts, it thins the consistency and dilutes the fruit and coconut flavors. Only add ice to portions you plan to drink immediately.Turmeric: Turmeric deepens the smoothie’s golden color. At 1/3 teaspoon, it does not add a noticeable turmeric flavor, allowing the mango and pineapple to remain dominant.
Adjust the consistency to your preference: Thickness varies with the temperature of the frozen fruit and the fat content of the coconut milk. Blend in extra orange juice for a thinner smoothie or a small amount of frozen mango or pineapple for a thicker one.