For the hot latte: Place the matcha powder in your mug or a small bowl. Pour in the hot water. Whisk briskly in an up-and-down direction to make a thick, green paste. Pour the coconut milk, water, sweetener, and spices into a small saucepan and heat over medium heat until warm, make sure not to bring the milk to a boil. Pour the matcha paste into the saucepan and whisk. Taste and adjust sweetener as desired. Optional: top with steamed milk.
For the iced latte: Place the matcha powder in a small bowl. Pour in one tablespoon of hot water. Whisk briskly in an up-and-down direction to make a thick, green paste. Pour green matcha paste along with the rest of the ingredients into a blender. Blend on high until well combined.
Matcha Ice Cubes: Place the matcha powder in a small bowl. Pour in one tablespoon of hot water. Whisk briskly in an up-and-down direction to make a thick, green paste. Pour green matcha paste along with the remaining water into a blender. Blend on high until well combined. Pour into ice cube molds and freeze for 6 hours.