Method
Hydrate the chia layer

In a medium bowl, whisk 120 ml of unsweetened coconut water for chia with 24 g of chia seeds until no dry pockets remain. Let the mixture stand for 10 minutes, stirring once halfway, until visibly thickened. Fold in 120 g of nonfat plain Greek yogurt for chia layer and stir until creamy and evenly speckled; the mixture should hold a soft trail from the spoon.
10:00Blend the mango base

Add 400 g of ripe mango, 120 g of ripe bananas, 180 g of nonfat plain Greek yogurt for smoothie, 180 ml of unsweetened coconut water for smoothie, 30 ml of fresh lime juice, and 1 g of ground cardamom to a blender, then add 160 g of ice cubes. Start on low, quickly increase to high, and blend for 30 to 45 seconds. Check at 30 seconds; stop when the mixture is completely smooth, thick, and able to fall from a spoon in a slow ribbon.
00:30Check the flavor and texture
Taste the mango mixture. It should be bright, creamy, and lightly aromatic rather than sharply tart or heavily spiced. Blend briefly again if any fruit pieces remain. If it is too thick to layer, loosen it with a small splash of coconut water; if it is too loose, blend in a few more ice cubes until it holds a slow ribbon.
Build the challenge layers

Divide about half of the mango smoothie among short, wide serving cups. Spoon the chia-yogurt mixture evenly over the mango, keeping a visible pale band around the glass, then cover it with the remaining mango smoothie. If using, cut fresh mango (optional) into small cubes and add three cubes to each cup. Serve immediately with wide spoons.
Smart Substitutions
- No Greek yogurt? Use an unsweetened dairy-free yogurt with a similarly thick texture.
- No coconut water? Use cold water, dairy milk, or an unsweetened plant drink; add it gradually to keep the smoothie thick.
- No cardamom? Use a small pinch of cinnamon or leave the spice out.
- Want a sharper finish? Add a little more lime juice and taste before blending again.
Tips and Variations
- Choose fully ripe, fragrant mango so the smoothie needs no added sweetener.
- Stir the chia once halfway through its standing time to break up seed clusters before they set.
- Use short, wide cups so the layers are easy to see and comfortable to eat with a spoon.
What Went Wrong?
- Chia layer stays runny Let it stand for 5 more minutes, then stir again before adding the yogurt.
- Smoothie is too thin Blend in a few more ice cubes until the mixture falls in a slow ribbon.
- Layers sink together Make sure both mixtures are thick, then add the chia layer close to the glass and spoon the top layer gently.
- Cardamom dominates Blend in more mango or yogurt to soften the spice, then rebalance with a little lime juice.
Nutrition Estimate
- Fiber: 5 g per serving
- Sodium: 50 mg per serving
Nutrition disclaimer:This recipe is provided for general cooking information only. Nutrition values are estimates and may vary by ingredients, brands, preparation methods, and serving sizes. Check ingredient labels and follow appropriate food-safety practices. This content is not medical, dietary, allergy, or professional food-safety advice.
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