Prepare the matcha base. In a small bowl or cocktail shaker, whisk the matcha powder with 1 tablespoon of warm water until fully dissolved and smooth with no lumps. This ensures a clean, vibrant green color in your finished drink.
Combine and shake. Add the Matcha Omoi Sake, Kikkoman Soy Milk Unsweetened, simple syrup, dissolved matcha, and ice to a cocktail shaker. Seal tightly and shake vigorously for about 15 seconds until well chilled and frothy.
Strain and serve. Strain the cocktail into a chilled coupe or wine glass. The Kikkoman soy milk creates a naturally creamy, frothy top as it settles.
Garnish and enjoy. Lightly dust the surface with a pinch of matcha powder for a finishing touch. Serve immediately and enjoy the delicate balance of earthy matcha, smooth sake, and silky soy.