Place the agar flakes and water in a small saucepan and bring to a boil. Reduce the flame to medium low. Stir occasionally until the agar flakes melt, about 5 minutes. Allow to cool about 5 minutes. Whisk in the matcha.
Instead of whisking and if you have a blender, you can pour the hot liquid into it, pulse several seconds to cool, then add the matcha and blend. Using a blender to mix the matcha dissolves it much more thoroughly than using a whisk.
When the matcha is dissolved in the water, pour into a small bowl. Place in the refrigerator until gelled, about 40 to 45 minutes.
Per serving - 8 calories, 0 g fat (2% calories from fat), 0 g protein, 2 g carbohydrate, 2 g fiber, 0 mg cholesterol, 11 mg sodium