Preheat your oven to 350°F (175°C).
Line a baking sheet with parchment paper and lightly grease it.
2. Mix Dry Ingredients
In a bowl, sift together flour, cocoa powder, baking powder, baking soda, and salt.
Add sugar and mix well.
3. Combine Wet Ingredients
In another bowl, whisk eggs, milk, and vanilla extract (if using) until smooth.
4. Make the Cake Batter
Gradually fold wet ingredients into the dry mixture until fully combined. Avoid overmixing.
5. Bake
Pour batter into the prepared baking sheet and spread evenly.
Bake for 12–15 minutes, or until a toothpick inserted in the center comes out clean.
6. Roll the Cake
While still warm, gently roll the cake in a clean kitchen towel dusted with powdered sugar. Let it cool completely in rolled shape to prevent cracking.
7. Add Filling
