Published December 10, 2022 · Updated September 9, 2026

This white chocolate ganache uses a dependable 3:1 chocolate-to-cream ratio by weight. Warm it for drips, cool it for spreading, or let it set until pipeable for macarons. The original 400 g chocolate to 300 g cream formula was too fluid for a reliable macaron filling.

Chopped white chocolate ready for making ganache

Smooth white chocolate ganache after emulsifying

White chocolate ganache ratio

King Arthur Baking recommends one part cream to three parts white chocolate by weight for an all-purpose ganache that flows warm and firms as it cools.

Use	Consistency
Macaron filling	Cool until it holds a piped mound.
Cake filling or frosting	Cool until spreadable.
Cake drip	Use while fluid but not hot; test one drip on a cold cake.
Whipped ganache	Chill until thick, then whip briefly at low-to-medium speed.

Ingredients

300 g real white chocolate, ideally 28–35% cocoa butter, finely chopped
100 g heavy cream, around 35% fat
Small pinch of table salt, optional
Oil-based or concentrated gel food color, optional

Method

Put the finely chopped chocolate in a completely dry heatproof bowl. White chocolate burns easily, so pre-melting is unnecessary.
Heat the cream just until steaming around the edges; do not boil it aggressively.
Pour the cream over the chocolate, cover and leave undisturbed for 3–5 minutes.
Stir gently from the center outward until glossy. If pieces remain, warm in 5–10-second microwave bursts, stirring after each.
For the smoothest emulsion, use an immersion blender with the head submerged so it does not introduce bubbles.
Press clean wrap onto the surface and cool to the consistency needed. Do not judge thickness while it is warm.

Bars of real white chocolate suitable for ganache

White chocolate ganache cooled to a thick spreadable texture

Use it for macarons

Let the ganache cool until it holds a clean piped mound. Pair shells, pipe a modest amount and close gently. Refrigerate filled macarons airtight for 12–24 hours before serving. Do not freeze the shells merely to force warm ganache to set; correct ganache temperature gives a more even texture.

Piping white chocolate ganache onto orange character macarons

White chocolate ganache piped onto decorated macarons

Cake drips and frosting

For drips, start with a thoroughly chilled cake and ganache that is fluid but no longer hot. Test one drip on the back: warm ganache runs farther; cooler ganache stops sooner. For frosting, let it cool until spreadable.

Cupcakes decorated with white chocolate ganache drizzle

Green celebration cake finished with white chocolate drips

Pink cake decorated with controlled white chocolate ganache drips

Purple tiered cake with pink ganache drips

Coloring white chocolate ganache

Oil-based candy color is the lowest-risk choice. Concentrated gel can also work in a fully formed ganache when used sparingly. Avoid large amounts of liquid color, which can loosen the mixture or disrupt the emulsion. Add color after the ganache is smooth.

Troubleshooting

Problem	Cause	Fix
Too thin	Still warm, low-cocoa-butter chocolate, or too much cream	Cool fully first; next time weigh a 3:1 ratio.
Grainy or split	Overheating or incomplete emulsion	Warm very gently and blend from the center without adding air.
Too firm	Ganache is cold	Warm in 5-second bursts and stir.
Drips run off cake	Ganache or cake is too warm	Chill the cake and cool the ganache; test one drip.

Storage

Ganache contains cream. Refrigerate it airtight at 4°C/40°F or colder and use within 3–4 days. Press wrap directly against the surface to prevent a skin. Thaw frozen ganache overnight in the refrigerator and re-emulsify gently if needed. Do not rely on the old claim that ganache never sweats or is automatically stable in high heat and humidity.

Different brands set differently because white chocolate varies in cocoa-butter and sugar content. Record the brand and ratio when a batch gives you the texture you want.
Belli xx