In a small bowl, mix matcha and warm water. Whisk until matcha is fully dissolved and becomes a paste.
In a mason jar, add all ingredients (including matcha paste). Use a spoon to stir.
Store overnight in the fridge, or at least for 5 hours.
Serve cold in the morning. For extra sweetness, you may add ¼ tsp vanilla extract, or 1 tsp of maple syrup.