Dark chocolate ganache for a drip is 1 part chocolate to 1 part cream by weight, so 400 g of chocolate takes 400 g of cream. Milk chocolate needs roughly twice the chocolate of dark for the same set, and white about three times, because it has no cocoa solids at all.
Updated 2026. Worked from published standards and trade convention; researched, not professional advice.
Published couverture ratios for dark, milk and white chocolate across five uses, scaled to your quantity.
The formula
cream = chocolate x (cream parts / chocolate parts), by weight
Ganache sets on cocoa butter and cocoa solids, and the three chocolate types carry very different amounts of both. Dark chocolate is mostly cocoa. Milk chocolate replaces much of that with milk solids and sugar. White chocolate has no cocoa solids whatsoever and sets purely on its cocoa butter.
That is why substituting white for dark at the same ratio gives you a sauce rather than a ganache, which is the commonest way this goes wrong.
Always weigh. Chocolate callets pack differently depending on their shape and how you pour them, so a cup of chocolate can vary by a third in weight between two fills of the same jug.
Derived, published or convention?
These ratios are PUBLISHED figures from couverture manufacturer charts. Which firmness suits which job is TRADE CONVENTION. The bag in front of you beats any chart, because makers print ratios for their own recipes.
Ganache ratios by chocolate type and use, chocolate to cream by weight
Use
Dark
Milk
White
Cream for 400 g dark
Pourable glaze, still fluid when it sets
1:2
2:2
2.5:2
800 g
Drip cake, thick enough to stop partway down the side
1:1
2:1
3:1
400 g
Soft filling, spoonable at room temperature
1:1
2:1
3:1
400 g
Whipped frosting, holds a piped shape once beaten
3:2
5:2
7:2
267 g
Truffle centres and firm panels, cuts cleanly
2:1
3:1
4:1
200 g
Published couverture manufacturer ratios. Ratios are by weight, never by volume.
Gear for these numbers
These are rendered from the verified catalog and re-ordered against your numbers once you calculate.
At 70 percent it sets harder for the same cream than a 54 percent does, so a ganache recipe written for Callebaut 811 needs more cream if you swap to this.
Amazon prices move often, so check before you buy.
Questions people ask
What is the ratio for milk chocolate ganache?
By weight, chocolate to cream: 2 to 1 for a drip or a soft filling, 5 to 2 for whipped frosting, 3 to 1 for a firm, sliceable set, and 1 to 1 for a pourable glaze. Milk chocolate needs about twice the chocolate of dark for the same set because it carries milk solids and sugar in place of cocoa solids.
Why does white chocolate need so much more chocolate than dark?
Because it has no cocoa solids at all and sets only on its cocoa butter, which is roughly 28 to 35 percent of the bar. Dark chocolate carries both cocoa solids and a higher proportion of cocoa butter, so it sets far harder for the same weight of cream. Using a dark ratio with white chocolate reliably produces something that never sets.
My ganache split. Can I fix it?
Almost always. Splitting usually means the cream was too hot, or the mixture was stirred too vigorously while the emulsion was still forming. Add a spoonful of warm milk and stir from the centre outward in small circles, or blend it briefly with a stick blender kept below the surface so it does not draw in air. Both usually bring it back.
Can I use chocolate chips instead of couverture?
You can, and the ratios will be less reliable. Chips are formulated to hold their shape in a cookie, which means less cocoa butter and often added stabilisers, so they melt thicker and set differently. If you are following a published ratio, use a couverture, because the ratio was written for one.
How long can ganache sit at room temperature?
A dark ganache at a firm ratio is stable at cool room temperature for a day or so, and shops routinely keep it out. Ratios with more cream, and milk and white ganaches generally, are far less stable and are better refrigerated. If the cake also carries cream cheese or whipped cream, refrigerate it regardless of the ganache.
This calculator does arithmetic on the numbers you give it. It does not know your oven, your recipe or
your altitude. Figures are labelled as derived, published or trade convention, and where no honest
figure exists the calculator says so instead of producing one. Researched guidance, not professional advice.