Amazing Black Forest Cake

Ingredients

• 1/2 cup all-purpose flour
• 1/4 cup unsweetened cocoa powder
• 1 1/2 tbsp powdered milk
• 1 tsp baking powder
• 1/4 tsp salt
• 3 large eggs, room temperature, separated
• 1/3 cup sugar
• 1 tsp vanilla + 1 tsp vanilla, divided
• 1 tbsp vegetable oil
• 2 cups whipping cream
• 1/2 cup powdered sugar
• 1/2 tbsp cornstarch
• Maraschino Cherries with stems in syrup
• shaved and grated chocolate for decoration