Putting fondant icing on a chocolate biscuit cake involves preparing the cake, rolling out the fondant, and carefully applying it for a smooth finish.
Steps to Fondant a Chocolate Biscuit Cake:
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Prepare the Chocolate Biscuit Cake:
- Ensure the cake is firm and has cooled completely. A crumb coat is usually not needed for a chocolate biscuit cake due to its dense texture, however, if your cake has imperfections or a very uneven surface, you can apply a thin layer of ganache or buttercream. This will provide a smooth base for the fondant. Let the ganache/buttercream set before moving on.
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Prepare the Fondant:
- Knead the fondant until it's pliable and smooth. This makes it easier to roll out without cracking. You can add a small amount of vegetable shortening or glycerine if the fondant feels dry.
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Roll Out the Fondant:
- Dust your work surface with icing sugar or cornstarch to prevent sticking.
- Roll the fondant out to approximately 0.5-1 cm (1/4 inch) thick. Make sure the circle is large enough to cover the entire cake plus some extra for smoothing and trimming. A rough estimate is 12" x 12" for a standard-sized cake, but measure your cake to be certain.
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Apply the Fondant:
- Carefully lift the fondant and drape it over the cake. You can use a rolling pin to help lift and transfer the fondant without tearing it.
- Gently smooth the fondant over the top of the cake using your hands or a fondant smoother. Work from the center outwards to remove air bubbles.
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Smooth the Sides:
- Work your way down the sides of the cake, gently easing the fondant against the cake. You can use your hands or a fondant smoother to eliminate wrinkles and air pockets. The technique of pulling, stretching, and smoothing the fondant is key here.
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Trim Excess Fondant:
- Once the fondant is smoothly adhered, trim the excess fondant around the base of the cake using a sharp knife or pizza cutter. Leave a small border initially and trim closer as needed.
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Final Smoothing:
- Use a fondant smoother to create a professional-looking finish. Pay attention to the edges and corners, ensuring they are sharp and clean.
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Decorate (Optional):
- Add any desired decorations to the fondant, such as edible glitter, fondant cutouts, or painted designs.
By following these steps, you can successfully apply fondant to a chocolate biscuit cake, achieving a professional and visually appealing finish.
