In a saucepan, warm the first portion of milk, oil, and matcha powder to 75°C.Add the sifted flour and salt, mixing until the batter is gelatinized. In a separate container, combine the second portion of milk, whole eggs, and egg yolks, then blend well with a hand blender (Micromix). Prepare a medium-peak French meringue using the egg whites and caster sugar. Gently fold the meringue into the matcha mixture (fixed from "coffee") and spread evenly onto a Flexipan (53cm x 35cm). Bake at 150°C for 14 minutes.