Flourless Chocolate Cake is the perfect recipe for any chocolate lover! It is rich, silky chocolatey and the perfect dessert for any celebration. The cake is gluten-free and super decadent. Simple yet elegant dessert!

1. Prepare a large bowl and melt the chocolate together with butter using the double boiler technique. 2. In another bowl, mix together the egg yolks, cocoa powder, vanilla extract, espresso powder, and heavy cream. Stir until well combined and the mixture is homogeneous.

3. Gradually pour the melted chocolate mixture (from step 1) into the bowl with the egg mixture (from step 2). Gently stir until all the ingredients become smooth. 4. In a separate bowl, use a mixer to beat the egg whites and cream of tartar. Then, gradually add the granulated sugar while continuing to mix at high speed until the egg whites are soft peaks. 5. Fold a small portion of the egg white mixture (from step 4) into the chocolate mixture (from step 3). Stir until evenly mixed.

6. Slowly incorporate the remaining egg white mixture into the chocolate mixture, using a folding technique (gently folding the batter from bottom to top) to ensure the batter remains light and airy. 7. Pour the batter into a baking pan lined with parchment paper. 8. Bake the cake in a preheated oven at 180°C (350°F) for 25 minutes or until the cake is cooked. Use a toothpick or skewer to check the cake's doneness. 9. Remove the cake from the pan and decorate it with icing sugar.