Step 1: In a small bowl, mix the water into your matcha powder slowly. Once combined, set aside.
Step 2: In another container, add your spearmint leaves and sugar. Mix them together with a spoon or a drink muddler, making sure the sugar crushes the leaves to release the spearmint oil.
Step 3: Add your lemon juice and bourbon to the leaves and sugar mixture, giving it a quick stir before adding your matcha.