Begin by preparing the strawberries and matcha powder for the tiramisu.
In a bowl, combine the hot water with the matcha powder and stir until dissolved.
Dip the ladyfingers briefly in the matcha mixture, ensuring they are soaked but not soggy.
In a separate bowl, whip the cold heavy cream until soft peaks form.
Add the cold mascarpone cheese, granulated sugar, and vanilla extract to the whipped cream, and gently fold until well combined.
Layer the bottom of your serving dish with the dipped ladyfingers.
Spread a layer of the mascarpone mixture over the ladyfingers.
Add a layer of frozen strawberries on top of the mascarpone.
Repeat the layers until all ingredients are used, finishing with the mascarpone mixture on top.
Sift additional matcha powder over the top layer for decoration.
Garnish with fresh strawberry slices and herbs to resemble petals and stems.
Chill the tiramisu in the refrigerator for a few hours before serving.
