Crust: -------- * 1 1/2 cups all-purpose flour * 1/3 cup white sugar * 1 egg, beaten * 1/2 cup butter, softened Filling: ---------- * 7 ounces cream cheese, at room temperature * 1/4 cup whole milk * 1/2 cup superfine sugar (caster sugar) * 3 eggs, separated * 1/4 cup cornstarch (don't use flour) * 2 tablespoons green tea powder (matcha) * 2 tablespoons lemon juice * 1/2 teaspoon cream of tartar * 2 1/2 cups boiling water Topping: ---------- * 1 pint sour cream * 3 tablespoons sugar * 1 teaspoon vanilla Directions: ------------- 1.CRUST--------------------. 2.Gently combine 1 1/2 cups flour, 1/3 cup sugar, 1 egg and 1/2 cup butter in a medium bowl. 3.Spread to the edges of 9" spring form pan. 4.Prick all over with a fork, then bake 10-15 minutes at 400 degrees F until lightly browned. Allow to cool on a rack. 5.FILLING-----------------. 6.Heat oven to 350 degrees. 7.Beat cream cheese with milk to soften. 8.Add half of the sugar, egg yolks, cor...