Neapolitan Cake

Name: Neapolitan Cake
Cuisine: European, American, Italian, Mediterranean
Ingredients: 3 oz bittersweet chocolate, finely chopped ((I used 60% cacao)); ⅓ cup dutch process unsweetened cocoa powder; ¾ cup hot coffee ((see note)); ¾ cup flour; ¾ cup sugar; ½ tsp baking soda; ¼ tsp salt; ⅓ cup vegetable oil; 2 eggs; 2 tsp white vinegar ((see note)); 1 tsp vanilla extract; 1 tsp chocolate extract ((see note)); 8 oz strawberries; 1¼ cups cake flour ((see note)); 1 tsp baking powder; ¼ tsp baking soda; 6 Tbsp unsalted butter, softened; 3 egg whites, at room temperature; 3 Tbsp sour cream ((I used full fat)); ¼ cup whole milk, at room temperature; pink food coloring, if desired; ¼ cup unsalted butter, soft but still cool ((4 Tbsp or ½ stick)); 3 Tbsp coconut oil, solid but creamy; ½ cup sugar; ½ tsp baking powder; pinch salt; 2 egg whites, at room temperature; ½ Tbsp vanilla bean paste ((see note)); 1 cup cake flour ((see note)); ½ cup buttermilk ((see note))