Giant Swiss Cake Roll Recipe @ TotallyChefs

Ingredients

• 3/4 cup (3.5 oz) all-purpose flour
• 1/4 cup (.75 oz) dark or dutch processed cocoa powder
• 1/2 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon kosher salt
• 4 large eggs, room temperature
• 3/4 cup granulated sugar
• 1 teaspoon vanilla extract
• 1/2 teaspoon instant espresso powder
• 1/4 cup unsalted butter, cut into cubes
• 2 ounces dark chocolate (60-70%), finely chopped
• 6 tablespoons unsalted butter, room temperature
• 2 tablespoons unflavored vegetable shortening, room temperature
• 8 ounces marshmallow fluff
• 1 cup powdered sugar, sifted (more as needed)
• 1/4 cup heavy cream
• For Glaze:
• 4 ounces dark chocolate (60-70%), finely chopped
• 3/4 cup heavy cream
• 1 tablespoon salted butter, cut into cubes