Sift the matcha powder through a fine-mesh strainer into a small mixing bowl to eliminate any lumps.
Add the warm water to the matcha powder and whisk vigorously in a W-motion until completely smooth and frothy, about 30 seconds.
In the same bowl, whisk in the honey or maple syrup until fully dissolved into the matcha mixture.
Add the fresh pineapple juice, lime juice, and coconut water to the matcha base, whisking gently to combine all ingredients evenly.
Taste and adjust sweetness with additional honey if needed, then strain the mixture through a fine-mesh strainer to ensure ultra-smooth consistency.
Pour the green tea mixture evenly into 4 shot glasses, filling each about 3/4 full.
Garnish each shot with a small fresh mint leaf and serve immediately for the best flavor and vibrant color.