Chocolate Angel Food Cake

Ingredients   
1 1/2  cups sugar    
  Scant 1 cup cake flour (not self-rising)    
1/4  cup cocoa powder    
1  teaspoon baking soda    
1/2  teaspoon salt    
1  ounce semisweet chocolate, grated (about 1/2 cup)    
12  large egg whites    
1  teaspoon cream of tartar    
1  teaspoon pure vanilla extract    
1/4  teaspoon pure almond extract 
Chocolate Hazelnut Anglaise

Directions 
1.   Preheat oven to 350*F place oven rack in center. Sift together onto a piece of parchment paper 3/4 cup sugar, flour, cocoa powder, baking soda, and salt. Add grated chocolate; set aside. 

2.   In the bowl of an electric mixer fitted with the whisk attachment, beat egg whites and cream of tartar until soft peaks form. With machine running, add the remaining 3/4 cup sugar in a slow steady stream, beating until fully incorporated and stiff glossy peaks form. Add vanilla and almond extracts; beat to combine. 

3.   Remove from mixer. Gradually add flour mixture, gently but thoroughly, folding into egg-white mixture until fully combined. Pour into a nonstick angel food–cake pan. Tap pan on counter to remove any air bubbles. Bake until cake springs back when depressed with a finger, 30 to 35 minutes. Cool, inverted, 1 hour before removing pan. Serve with chocolate hazelnut anglaise. 

Chocolate Hazelnut Anglaise
Ingredients      
1/2  cup sugar    
4  large egg yolks    
1  cup heavy cream    
1  cup whole milk    
1/2  vanilla bean, split and scraped    
  Pinch of salt    
2  tablespoons Nutella

Directions
1. Prepare an ice bath; set aside. In a medium bowl, whisk together 1/4 cup sugar and egg yolks; set aside.
 
2. In a medium saucepan over medium-high heat combine remaining 1/4 cup sugar, heavy cream, milk, vanilla bean with scrapings, and salt. Bring just to a simmer. Using a measuring cup or a ladle, slowly pour about 1/2 cup of the hot milk mixture into the egg-yolk mixture. Whisking constantly, continue to add milk mixture, about 1/2 cup at a time, until it has all been added. Pour mixture back into saucepan. 

3. Cook over low heat, stirring constantly with a wooden spoon, until thick enough to coat back of a spoon, 1 to 5 minutes. Pour through a fine-mesh sieve into a medium bowl, set over ice bath. Whisk in Nutella; stir occasionally until cool.
   
4. Cover, and transfer to refrigerator until completely chilled, at least one hour and up to overnight.Makes about 2 1/2 cups. 


Source:  www.marthastewart.com