Cake Fillings and Icings

Perfect Chocolate Ganache for Filling and Covering Cakes

A silky-smooth, versatile dark chocolate ganache designed specifically for the professional cake designer. This stable, reliable recipe provides the perfect foundation for achieving contemporary sharp edges and luxurious, melt-in-the-mouth fillings.

Chocolate Ganache for Filling and Covering
Prep
10 min
Cook
5 min
Serves
12
Level
Medium
Per serving
375 kcal

Method

  1. Finely chop the dark chocolate into uniform pieces and place them into a clean, dry heatproof glass or ceramic bowl. Avoid using plastic as it can retain oils.

  2. Pour the double cream and liquid glucose into a heavy-bottomed saucepan. Heat gently over a medium flame, stirring occasionally, until it just reaches a simmering point (look for small bubbles around the edge), but do not let it reach a rolling boil.

  3. Immediately pour the hot cream over the chopped chocolate. Ensure all the chocolate is submerged. Leave the mixture completely undisturbed for 5 minutes; this allows the chocolate to melt evenly without introducing air bubbles.

  4. Using a rubber spatula, begin stirring gently in small circles in the centre of the bowl. Slowly widen the circles until the cream and chocolate emulsify into a thick, glossy, and uniform liquid.

  5. Add the cubed butter and stir gently until it has completely melted and incorporated. This provides a professional sheen and a smoother mouthfeel.

  6. Cover the surface of the ganache directly with cling film (touching the liquid) to prevent a skin from forming. Leave it to set at room temperature overnight. For filling, use when it reaches a peanut-butter consistency. For masking and sharp edges, it should be firm but spreadable.

Notes

Always use a high-quality couverture chocolate rather than supermarket cooking chocolate for the best stability and flavour.

If your ganache looks grainy or 'split', add a tablespoon of cold double cream and whisk vigorously to bring the emulsion back together.

Never refrigerate ganache to speed up the setting process for a celebration cake, as this can lead to condensation and 'sweating' under fondant.

The 2:1 ratio (chocolate to cream) is standard for UK dark chocolate ganache; for white chocolate, you must increase the ratio to 3:1 due to the lack of cocoa solids.

Questions

Can I use this ganache under fondant?
Yes, this 2:1 ratio is specifically designed to be stable at room temperature, making it the ideal base for fondant-covered celebration cakes.
How do I get sharp edges on my cake?
Apply the ganache using acrylic disks and a metal scraper. Once the ganache has firmed up on the cake, the edges will remain crisp and professional.
How long does ganache keep?
Dark chocolate ganache can be kept at room temperature for up to 3 days or in the fridge for up to 2 weeks. Always bring to room temperature before use.
Why did my ganache seize?
Chocolate seizes when even a tiny amount of water enters the mixture. Ensure all your equipment is bone-dry before starting.

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