Warm dragon fruit juice, oil, and vanilla bean paste in a saucepan to 75˚C. Add sifted flour and salt, stirring until gelatinized. In a jar, combine dragon fruit juice reduction, whole eggs, and egg yolk, then blend well with a Micromix. Prepare a medium-peaked French meringue with egg whites and caster sugar. Fold the meringue into the dragon fruit mixture and spread evenly onto a Flexipan (53cm x 35cm).