In a *large bowl*, mix together the dry ingredients: flour, sugar, cocoa powder, baking powder, baking soda, and a pinch of salt. Create a well in the center and add in the eggs, milk, vegetable oil, and vanilla extract.

*Mix until smooth*, then slowly *incorporate the boiling water*. The batter should be *thin*, but that's perfectly fine.

Preheat your oven to 180°C (350°F). Grease and flour a round cake pan. Pour the batter into the prepared pan.

Bake for *30-35 minutes* or until a toothpick inserted into the center comes out clean. Allow the cake to cool in the pan for about 10 minutes, then remove it to a wire rack to cool completely.

In a *double boiler*, melt the chocolate and butter together until smooth. Remove from heat and *stir in the powdered sugar*. Mix until you achieve a *creamy consistency*.

Once the cake is fully cooled, place it on a *serving platter*. Spread the chocolate frosting evenly over the top and sides of the cake using a spatula.

*Decorate as desired* and let the frosting set for about 20 minutes before serving. Enjoy this delightful chocolate indulgence with family and friends.