The matcha mille crepe cake is a popular Japanese dessert that consists of layers of thin crepes and matcha cream. The crepes are made with a batter of flour, eggs, milk, and sugar, and are cooked one by one on a hot griddle. The matcha cream is made with whipped cream and matcha powder, and is spread between each layer of crepes. The result is a beautiful and delicious cake that is perfect for special occasions.