Almond and Matcha Cake

Name: Almond and Matcha Cake
Prep time: 25 min
Cook time: 1 h 10 min
Total time: 1 h 10 min
Yield: 12 slices
Ingredients: oil; 4 egg whites; 1 tsp cream of tartar; 2 Tbsp granulated sugar; 4 large eggs; 135 g icing sugar; 70 g ground almonds; 120 g plain flour; 3 tsp matcha green tea powder; 50 g white chocolate; 170 g unsalted butter; 350 g icing sugar; 1 tsp vanilla extract; 2 Tbsp flaked almonds