Sift the matcha powder through a fine sieve into a small bowl to remove lumps, ensuring a smooth latte.
Pour hot water over the sifted matcha and whisk vigorously until the mixture becomes frothy, mossy green, and slightly thickened—this should take about 30 seconds.
If desired, stir in honey or simple syrup into the matcha mixture for a touch of sweetness, whisking briefly to combine.
Fill a glass with large ice cubes, nearly to the top, creating a chilled base for your latte.
Froth the milk until it becomes velvety and slightly frothy, either using a milk frother or by shaking vigorously in a jar.
Pour the frothy milk over the ice-filled glass, filling it almost to the top, and watch as the milk blends gently with the cold ice below.
Slowly pour the whisked matcha mixture over the milk, watching the vibrant green bloom and swirl into the white milk for a beautiful layered effect.
Gently stir the drink if you prefer a uniform color or leave it layered for a striking visual.
Enjoy immediately with a straw or spoon, savoring the bright aroma and smooth, frothy texture of your homemade matcha latte.