Why Ganache Belongs in Every Baker's Repertoire

Ganache is one of those wonderfully unfussy things that looks far more impressive than it is. Two ingredients, one bowl, and a little patience — yet it can be a mirror-smooth glaze, a cloud-light filling, or a dense truffle centre, all depending on how you balance the cream and the chocolate. Learn the ratios and you will never need a packet mix again.

It is also remarkably forgiving. A split ganache can be rescued, a too-soft one can be chilled and whipped, and a flavourless one can be lifted with a pinch of salt and a drop of vanilla. Once you understand what each proportion does, you can bend the recipe to whatever cake is sitting on your worktop.

The Golden Ratio: Chocolate to Cream

Forget cups and spoons here — ganache is built on weight, because chocolate and cream have very different densities. Weigh everything on a digital scale in grams and you will get consistent results every single time.

• Firm truffle centres: 2 parts chocolate to 1 part cream (200g chocolate, 100g cream). Sets sliceable and dense.
• Whipped filling or frosting: 1 part chocolate to 1 part cream. Chills to a soft set, then whips to a fluffy pipeable texture.
• Pourable glaze: 1 part chocolate to 1.5 parts cream (200g chocolate, 300g cream). Flows over a cake and sets with a gentle sheen.
• Dipping and coating: 1 part chocolate to 1 part cream, cooled to about 32°C, gives a thin even shell.

Dark chocolate is the benchmark. Milk and white chocolate contain more sugar and less cocoa solids, so they set far more softly — reduce the cream by roughly a quarter, or increase the chocolate, to get the same consistency.

Choosing Chocolate and Cream

The quality of your chocolate is the flavour of your ganache, so use a bar you would happily eat on its own. Supermarket baking chocolate or cheap chocolate chips often contain added oils and stabilisers that make ganache greasy and slow to set. A bar with around 55–70% cocoa solids is the sweet spot for dark ganache; anything above 75% will need a little extra cream to stay smooth.

For the cream, use double cream. Single cream simply does not carry enough fat to emulsify properly, and the result will be thin and prone to splitting. The fat is what binds the cocoa solids and water together into that glossy, silky emulsion.

Step by Step: A Perfectly Smooth Ganache

• Chop the chocolate finely and place it in a clean, dry heatproof bowl. Pieces no larger than a pea melt evenly and quickly.
• Heat the cream gently in a saucepan until small bubbles shiver around the edge — just below a simmer, roughly 85°C. Do not let it boil, or the fat may separate.
• Pour the hot cream over the chocolate and leave it completely undisturbed for two minutes. Resist stirring straight away; the resting time does half the work for you.
• Stir from the centre outwards with a spatula, in small slow circles, drawing the melted chocolate into the cream. As it comes together, widen your circles until the mixture is uniformly dark and glossy.
• Finish with a small knob of butter — about 15g per 200g of chocolate — and a pinch of fine sea salt. The butter adds shine, the salt sharpens the flavour.

If you want a flawless mirror finish, blend the finished ganache briefly with a stick blender before it cools. It introduces no air and emulsifies the mixture beautifully.

Troubleshooting: Splits, Grains and Soft Sets

• It looks greasy or curdled. The cream was too hot or a splash of water got in. Rescue it by whisking in a tablespoon of cold cream, or blitz with a stick blender until it snaps back together.
• It is grainy rather than smooth. The chocolate has seized. Strain out any solids, warm the mixture very gently over a pan of simmering water, and stir constantly until fluid again.
• It will not set. Too much cream, or a warm kitchen. Chill it for an hour; if it is still slack, melt in another 50g of chopped chocolate.
• It is too stiff to pour. Warm it in short bursts in the microwave or over simmering water, adding a spoonful of warm cream until it flows.

Flavours, Finishing and Storage

Once you have the base right, flavouring is easy. Steep strips of orange zest, a split vanilla pod, or a spoonful of ground espresso in the warm cream for twenty minutes, then strain before pouring over the chocolate. Liqueurs and extracts go in at the end, after the ganache has cooled slightly, so their alcohol does not seize the chocolate.

To glaze a cake, set it on a wire rack over a tray and pour the ganache from the centre outwards, letting it fall over the edges in one confident movement. Work with it at around 32°C — warm enough to flow, cool enough to cling.

For whipped filling, chill the ganache for two hours, then beat it on low speed until it just holds soft peaks. Stop the moment it thickens; over-whipping turns it grainy and dull. To store, press cling film directly onto the surface and keep it in the fridge for up to a week, or freeze for three months. Reheat gently, never in a hurry, and it will come back as glossy as the day you made it.