Mango Passion Fruit Cake

Name: Mango Passion Fruit Cake
Prep time: 35 min
Cook time: 30 min
Total time: 1 h 5 min
Cuisine: British
Ingredients: 100 g butter; 200 g caster sugar; 1/2 tsp pure vanilla extract or 1/4 tsp of vanilla paste; 3 medium eggs (separated); 200 g natural or greek yoghurt; 250 g plain flour (all-purpose); 2 tsp baking powder; 1/2 tsp bicarbonate of soda / baking soda; 1 pinch fine sea salt; 100 g mango (diced, optional); 1 piece mango (260g fresh or frozen ); 50 g caster sugar (4 tbsp); 2 pieces passion fruit; 2 tsp cornflour (cornstarch); 200 g full-fat cream cheese (I use Philadelphia); 100 g unsalted butter (room temperature); 300-400 g icing sugar (US powdered sugar); 1 pod of vanilla or 1/4 tsp of vanilla paste; ⅛ tsp fine sea salt; 1-2 tsp cornflour (cornstarch) (optional)