Follow these steps to create your Black Forest Swiss Roll effortlessly:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Prepare a 15×10 inch jelly roll pan by lining it with parchment paper and greasing the paper lightly.
2. Mix Eggs and Sugar: In a large mixing bowl, beat the eggs with granulated sugar until thick and pale, about 5-7 minutes.
3. Add Vanilla: Stir in the vanilla extract.
4. Combine Dry Ingredients: In a separate bowl, whisk together cocoa powder, baking powder, flour, and salt.
5. Fold Dry into Wet: Gently fold the dry ingredients into the egg mixture until just combined, ensuring not to deflate the mixture.
6. Spread Batter: Pour the batter into the prepared jelly roll pan, spreading it evenly.
7. Bake: Bake in the preheated oven for 15-20 minutes or until the cake springs back lightly when touched.
8. Cool the Cake: While the cake is baking, prepare a clean kitchen towel by dusting it with powdered sugar.
9. Roll the Cake: Once baked, remove the cake from the oven. Invert it onto the prepared towel and peel off the parchment paper. Starting from one edge, roll the cake tightly in the towel and let it cool completely.
10. Prepare the Filling: While the cake is cooling, whip the heavy cream using a mixer until soft peaks form. Add powdered sugar and continue whipping until stiff peaks form.
11. Unroll the Cake: Carefully unroll the cooled cake and spread the whipped cream evenly over it.
12. Add Cherries: Disperse the chopped cherries evenly over the whipped cream.
13. Re-roll the Cake: Roll the cake back up without the towel, starting from the same edge. Place the rolled cake seam-side down on a serving platter.
14. Chill the Roll: Refrigerate for at least 30 minutes to set it.
15. Serve: Dust with cocoa powder or icing sugar, and top with chocolate shavings, if desired. Slice and enjoy!

These step-by-step instructions will help you achieve a beautiful Black Forest Swiss Roll with amazing flavors and textures.