This sophisticated cake is a luxurious combination of tangy passion fruit and rich hazelnuts, creating a flavor profile that is both complex and delicious. The cake is made with a combination of all-purpose flour and ground hazelnuts, giving it a tender crumb and a nutty flavor. The batter is flavored with passion fruit juice and vanilla extract, and is baked until golden and fragrant. The cake is finished with a simple glaze made with powdered sugar and passion fruit juice, and is garnished with chopped hazelnuts and fresh passion fruit pulp. This cake is perfect for a fancy dinner party or a holiday celebration.