In a medium bowl, combine ube powder and granulated sugar. Gradually add warm water while stirring vigorously with a whisk until the mixture is completely smooth and free of lumps. Set the ube paste aside.

In a small saucepan, heat your choice of milk over medium-low heat. Stir gently to prevent scorching, keeping it warm but not boiling.

Once the milk is heated, remove it from the stove and slowly pour in the prepared ube paste. Whisk until fully incorporated.

Pour the ube latte into a glass. For an iced version, fill the glass with ice first. Froth some milk if desired and spoon it over the latte.

For an extra visual treat, sprinkle a pinch of ube powder atop your latte.