Making ganache
An emulsion of chocolate and cream. The ratio is chosen for the intended use, and it changes with the type of chocolate rather than with taste.
Ganache is chocolate and a liquid — usually cream — brought together as an emulsion: fat droplets suspended in water rather than melted chocolate diluted. That distinction is why technique matters. A ganache that has 'split' has broken the emulsion, and it looks greasy and grainy rather than merely thin.
The ratio is set by two things: how firm you need the result, and how much cocoa butter the chocolate already carries. Dark chocolate needs roughly twice its weight of chocolate to cream for a firm truffle; milk chocolate needs more chocolate for the same firmness because its cocoa solids are lower and its sugar higher; white chocolate needs more again.
- What it is for
- To produce a stable chocolate emulsion of a chosen firmness — for truffles, fillings, glazes or whipping.
- Working temperature
- 32–40°C — Emulsions form best when the two components are within a few degrees of each other. Cold cream into hot chocolate, or hot cream into cold chocolate, is the most common cause of splitting.
- Works with
- Dark chocolate, Milk chocolate, White chocolate, Couverture
Ratios
| For | Ratio | Note |
|---|---|---|
| Firm dark ganache — truffle centres | 2:1 chocolate to double cream | The standard. Sets firm enough to roll once cooled. |
| Soft dark ganache — piped fillings and glaze | 1:1 chocolate to double cream | Pourable warm, spreadable cool. The usual choice for a glaze. |
| Milk chocolate ganache | 3:1 chocolate to double cream | More chocolate is needed for the same firmness because milk chocolate carries less cocoa solid and more sugar. |
| White chocolate ganache | 4:1 chocolate to double cream | The highest chocolate ratio of the three, and the least forgiving of overheating. |
Method
1. Chop the chocolate finely and place it in a bowl.
Where people go wrong: Chunks too large to melt in the residual heat of the cream, which leads to over-heating to compensate.
2. Heat the cream to just below boiling and pour it over the chocolate.
Where people go wrong: Boiling the cream. It is not needed and increases the chance of splitting.
3. Leave undisturbed for a minute, then stir from the centre outwards in small circles until glossy and homogeneous.
Where people go wrong: Whisking vigorously from the start, which incorporates air and destabilises the emulsion before it has formed.
When it goes wrong
| Symptom | Cause | Fix |
|---|---|---|
| Greasy, grainy, visibly separated | The emulsion has split — the fat has come out of suspension. | Add a tablespoon of warm milk or cream and stir vigorously from the centre. If that fails, blend with a stick blender kept below the surface to avoid adding air. |
| Will not set firm | Too much liquid for the chocolate used, or a chocolate with lower cocoa butter than assumed. | Melt in more chocolate of the same type. Refrigeration will firm it temporarily but it will soften again at room temperature. |
| Grainy from the start, never becomes glossy | The chocolate was overheated before the cream was added, or water got in. | Blending may rescue an overheated ganache. A water-seized one is not recoverable as ganache. |
Related
Works with
- Dark chocolateThe 2:1 ratio is calibrated for dark chocolate, and using it with milk or white produces a ganache that will not set.
- Callets and pistolesUniform pieces melt evenly in hot cream, which removes the most common cause of a grainy ganache.
- Milk chocolateAn emulsion of chocolate and cream. The ratio is chosen for the intended use, and it changes with the type of chocolate rather than with taste.
- White chocolateAn emulsion of chocolate and cream. The ratio is chosen for the intended use, and it changes with the type of chocolate rather than with taste.
- CouvertureAn emulsion of chocolate and cream. The ratio is chosen for the intended use, and it changes with the type of chocolate rather than with taste.
Apply this with a tool
- Ganache ratio calculatorTurns the ratio table on this record into quantities for a chosen batch size.
- Chocolate scaling calculatorScales a ganache by ratio rather than by recipe, which is the whole reason ganache is expressed as a ratio.
Covered in
- Choosing chocolate for cookingWhere the type-dependent ratios come from.
- Milk chocolate explainedWhy the ganache ratio changes with the chocolate type.
- How to melt chocolateWhat to turn a seized batch into.
- Why chocolate turns whiteThe best use for a bloomed bar.
- Ganache ratios explainedThe method this guide gives the arithmetic for.
- Chocolate mousse troubleshootingThe related emulsion, and how its failures differ.
- Why ganache splitsThe method, with the ratios that prevent this.
- Why chocolate separatesWhere the recoverable version happens.
- Best chocolate for ganacheThe method itself.
- French chocolate explainedThe technique everything above rests on.
Compared in
- Ganache vs mousseSet against Mousse, with the practical consequence of each difference.
History and culture
- The French chocolatier traditionThe technique the tradition is organised around.
- Where ganache came fromWhat ganache actually is and how the emulsion behaves — the part that is not folklore.
- Nama chocolateThe technique underneath it. Nama chocolate is a ganache set and cut rather than piped or enrobed.
Sources
- ChocolateHQ editorial synthesis — ChocolateHQ(citation identity confirmed; passage not re-read)
- The Science of Chocolate — Royal Society of Chemistry(citation identity confirmed; passage not re-read)