Prep the mango. If using fresh mango, peel and dice it, discarding the pit.
For frozen mango, measure it directly from the bag. If your mango is very tart, plan on a bit more sweetener.
Chill your base. For a thicker, colder shake, use refrigerated milk and yogurt. If you want an extra frosty texture, briefly freeze the diced mango for 15-20 minutes.
Load the blender. Add milk, yogurt, mango, honey or sugar, vanilla, a pinch of salt, and lime juice if using.
Start with 1 cup milk and add more later if needed.
Blend until smooth. Begin on low, then increase to high for 30-45 seconds. Stop to scrape the sides if you see mango pieces. If it’s too thick to blend, add a splash of milk.
Adjust and refine. Taste the shake.
Add more sweetener for ripeness, another squeeze of lime for brightness, or a pinch more salt to sharpen the flavors.
Add ice for chill and volume. Drop in 6-8 ice cubes and blend on high until the shake turns smooth and slightly frothy. For a richer, no-ice version, skip this step and rely on frozen mango instead.
Finish and serve. Pour into chilled glasses. Garnish with chopped mango, toasted coconut, mint, or a dusting of nutmeg.
Serve immediately while it’s at peak creaminess.