Delia Smith Chocolate Mousse Recipe

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If you want a chocolate dessert that feels special without requiring a long list of ingredients, this Delia Smith Chocolate Mousse recipe is an excellent choice. It is intensely chocolatey, wonderfully smooth and lightened with whipped egg whites for an airy finish.

This version comes from Delia’s Complete How to Cook, where it sits among her other classic puddings built on technique rather than clever ingredients.

The recipe uses dark chocolate, warm water, eggs and golden caster sugar, with softly whipped cream served alongside if desired. The simplicity is part of its appeal: there are only a few ingredients, so the quality of the chocolate and the care taken when folding the mixture make a real difference.

This version makes 8 servings, making it a useful dessert for a family meal or dinner with friends. Prepare it ahead, chill it thoroughly and add your chosen garnish just before serving.

Why You’ll Love This Chocolate Mousse

There is plenty to like about this classic chocolate dessert.

• Naturally gluten-free — handy if you’re cooking for mixed dietary needs (more on this below).
• Deeply chocolatey — good quality chocolate is the main flavour, so it tastes rich rather than sweet.
• Genuinely light — whipped egg whites give it an airy texture without any cream in the base mixture.
• Quick to prepare — around 15–20 minutes of hands-on work before it goes in the fridge.
• Minimal washing up — just a couple of bowls and a saucepan.
• Ideal for entertaining — it can be made well ahead of a dinner party and looks impressive served in glasses.

Ingredients You’ll Need

Makes 8 servings

• 265g dark chocolate, about 75% cocoa solids (9.3 oz), broken into pieces
• 160ml warm water (5.4 fl oz)
• 4 large eggs, separated
• 55g golden caster sugar (1.9 oz)
• Softly whipped cream, optional, to serve

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How to Make Delia Smith Chocolate Mousse

1. Melt the chocolate with the warm water

Place the broken chocolate and warm water in a heatproof bowl.

Set the bowl over a saucepan containing gently simmering water. The bottom of the bowl should sit above the water rather than touching it.

Allow the chocolate to melt slowly, stirring gently when necessary. Once completely smooth, remove the bowl from the heat.

Leave it to cool for a couple of minutes before moving on to the eggs. The chocolate should remain fluid but shouldn’t be extremely hot.

2. Mix in the egg yolks

Separate the eggs, putting the yolks into the slightly cooled chocolate mixture.

Stir until the yolks are fully incorporated and the mixture is smooth.

Don’t add the yolks while the chocolate is excessively hot. A little cooling time helps keep the mixture smooth and prevents the yolks from becoming unevenly cooked.

3. Whip the egg whites and sugar

Put the egg whites into a completely clean bowl.

Whisk until soft peaks form. Gradually add the golden caster sugar, continuing to whisk until the mixture is glossy and holds its shape.

The finished whites should be firm enough to retain their volume but shouldn’t be dry or grainy.

4. Loosen the chocolate mixture

Take a small spoonful of the whipped egg-white mixture and stir it into the chocolate.

This lightens the chocolate base and makes it easier to incorporate the remaining whites without having to work the mixture too aggressively.

5. Fold everything together

Add the remaining whipped egg whites to the chocolate mixture.

Using a large metal spoon, gently fold the whites through the chocolate. Work from the bottom of the bowl upwards, turning the mixture over rather than stirring it in circles.

Continue only until the mousse is evenly combined.

Don’t worry about trying to make it completely uniform with lots of mixing. The more you work the mixture, the more air you can lose.

6. Chill before serving

Spoon the mousse into eight individual glasses or small ramekins.

Cover and refrigerate for at least 2 hours, or until the mousse has firmed sufficiently to spoon easily.

Serve chilled, with a little softly whipped cream if you like.

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Delia’s Tips & Tricks for the Recipe

Melt the chocolate gently

Chocolate can become thick or grainy when overheated. Keep the water underneath the bowl at a gentle simmer rather than allowing it to boil aggressively.

Don’t rush the egg yolks

Give the melted chocolate a short time to cool before adding the yolks. It should still be fluid but not scorching hot.

Whip the whites in a clean bowl

Any grease or traces of egg yolk can interfere with whipping. A clean, dry bowl gives you the best chance of achieving good volume.

Fold with a light hand

This is arguably the most important technique in the recipe. The mousse gets its airy texture from the whipped whites, so avoid beating or vigorous stirring.

Allow enough chilling time

The mousse becomes firmer as it cools. Serving it too soon can leave you with a softer mixture than intended.

Recipe Variations and Substitutions

The original combination works beautifully on its own, but a few optional changes can introduce different flavours.

Delia Smith Chocolate Orange Mousse

For anyone searching for a Delia Smith Chocolate orange Mousse, orange is a natural flavour pairing with dark chocolate.

The original mousse is not an orange-flavoured version, but you can make an optional orange variation by finely grating the zest of an orange into the chocolate mixture.

Add the zest after the chocolate has melted and cooled slightly. Start with a modest amount so that the orange complements rather than overwhelms the chocolate.

Delia Smith Dark Chocolate Mousse

This recipe is already well suited to anyone looking for a Delia Smith dark Chocolate Mousse because dark chocolate is the main ingredient.

For a stronger chocolate flavour, use a good-quality dark chocolate with a slightly higher cocoa percentage. Keep in mind that the finished mousse will also become less sweet and more intense.

Fresh berries

Raspberries and strawberries provide a fresh contrast to the rich chocolate. Add them immediately before serving rather than mixing them through the mousse.

Chocolate shavings

A few curls or shavings of dark chocolate make an easy garnish and reinforce the chocolate flavour.

Whipped cream

Softly whipped cream can be spooned over the mousse immediately before serving. Keep the quantity modest because the mousse is already rich.

If you particularly enjoy rich chocolate desserts, you might also want to try our Chocolate Roulade for something with a more dramatic presentation.

What to Serve With Chocolate Mousse

This dessert doesn’t need a complicated accompaniment.

Good choices include:

• Softly whipped cream
• Fresh raspberries
• Strawberries
• Orange zest
• Chocolate shavings
• A small cup of coffee or espresso

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For more ideas, browse our Delia’s Dessert Recipes collection and choose another dessert if you’re putting together a larger sweet course.

The mousse also works particularly well after a meal where the main course isn’t excessively rich. Because the chocolate flavour is concentrated, small individual portions are usually enough.

If you’re planning a bigger spread, it works nicely as the lightest option on a dessert table alongside something more substantial, such as a chocolate fudge cake.

For a lighter contrast, a fruit-based pudding such as a pavlova or an apple crumble balances out a chocolate-heavy dinner party menu nicely.

Nutrition Information

The following figures are approximate estimates for one serving of the 8-serving version, excluding optional whipped cream.

Nutrient	Approx. per serving
Calories	260 kcal
Protein	6g
Carbohydrates	22g
Fat	16g
Fibre	3g
Sugar	15g
Salt	0.1g

Actual nutrition will vary according to the chocolate brand, egg size and exact ingredients used. Adding whipped cream will increase the calorie and fat content.

Dietary Information

Is chocolate mousse gluten-free?

The core recipe doesn’t contain flour, so the ingredients themselves are naturally suitable for a gluten-free version.

However, if you’re making it for someone with coeliac disease or a serious gluten allergy, check the chocolate packaging carefully for allergen information and possible cross-contact.

Is it dairy-free?

The mousse itself does not require milk, butter or cream.

However, the optional whipped cream contains dairy, and some dark chocolates contain milk or may carry a milk-allergen warning. Always check the specific chocolate you are using.

Is it vegetarian?

Yes. The recipe contains eggs but no meat or fish.

Can you make it vegan?

Not in its original form, because eggs are an essential part of the recipe.

A separate vegan adaptation could use whipped aquafaba instead of egg whites, provided the chocolate is completely dairy-free. However, this changes the recipe and its texture, so it should be treated as a variation rather than the original method.

Common Mistakes to Avoid

Overheating the chocolate. If the chocolate gets too hot while melting, it can split and turn grainy rather than smooth. Keep the heat low and be patient — a slow melt gives the best texture.

Adding warm chocolate straight to the egg whites. If the chocolate mixture is too hot when you fold in the whisked whites, it will deflate them almost instantly. Always let it cool for a couple of minutes first.

Whisking egg whites in a greasy bowl. Any trace of fat, including a speck of egg yolk, will stop the whites from whipping up properly, leaving the mousse dense rather than light.

Overmixing when folding. Vigorous stirring at the folding stage knocks the air straight back out. Use gentle folding movements and accept a few visible streaks rather than a perfectly uniform mixture.

Not chilling for long enough. This mousse needs a proper 2 hours minimum in the fridge to set. Serving it too early results in a looser, less spoonable texture.

Can You Make This Recipe Ahead?

Yes. Chocolate mousse is particularly convenient when you want to prepare dessert before starting the main meal.

Once the mousse has been divided between individual glasses, cover each portion and refrigerate it until needed.

The final garnish can be added just before serving. This is especially useful if you’re using whipped cream, fresh berries or chocolate shavings.

Storage and Food Safety

Store the mousse covered with clingfilm in the fridge, and eat it within 2 days for the best texture and flavour, bearing in mind it contains raw eggs.

Freezing isn’t recommended, as the delicate whipped texture from the egg whites doesn’t hold up well once thawed — it tends to separate and lose its lightness.

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Meal Prep

This isn’t really a conventional meal-prep recipe, but it does work very well as an advance-prepared dessert.

The best approach is to portion the mousse into individual serving glasses immediately after mixing. Cover and refrigerate them so they are ready to serve when needed.

For entertaining, this can free up valuable kitchen space and time because the dessert is finished well before the meal reaches the table.

For everyday meal preparation, however, its raw-egg content and delicate texture mean it is better thought of as a make-ahead dessert rather than a long-term meal-prep option.

Frequently Asked Questions

Can I use milk chocolate instead of dark chocolate?

You can, but it will produce a sweeter mousse with a different flavour and texture. Dark chocolate is the better choice if you want the deep chocolate character of this recipe.

How can I make a Delia Smith Chocolate orange Mousse?

The original recipe is a dark chocolate mousse rather than an orange mousse. For an optional variation, add finely grated orange zest to the melted chocolate before folding in the whipped egg whites.

Why is my chocolate mousse too heavy?

The most likely cause is losing too much air from the whipped egg whites. Fold them gently through the chocolate mixture and avoid unnecessary stirring once they have been added.

Can I make the mousse without whipped cream?

Yes. Whipped cream is optional and can simply be left out. The mousse itself doesn’t depend on cream for its structure.

Can I use a higher percentage dark chocolate?

Yes, although the flavour will become more intense and less sweet. If you enjoy very dark chocolate, this can work well, but a chocolate around 70–75% cocoa solids gives a more balanced result.

How long does chocolate mousse need to chill?

Allow at least 2 hours in the refrigerator. This gives the mousse time to firm up and develop its final texture.

Can I double the recipe?

The quantities can be scaled, but a very large batch can be more difficult to fold without losing air. If you’re making a substantial quantity, working in two batches can make the folding stage easier to control.

Can I freeze chocolate mousse?

Freezing isn’t recommended if you want to preserve the original smooth, airy texture. Refrigeration is the better option for this mousse.

Is this chocolate mousse gluten-free?

The recipe itself contains no flour, but always check the chocolate packaging if you’re preparing the mousse for someone with coeliac disease or a gluten allergy.

Final Thoughts

This Delia Smith Chocolate Mousse is a fine example of a dessert that relies on a few good ingredients and careful technique rather than unnecessary complexity.

The dark chocolate delivers the richness, egg yolks give the mixture body and whipped egg whites create the light texture expected from a classic mousse.

Prepare it ahead, give it plenty of time to chill and keep the final decoration simple. Whether you serve it with cream, berries, chocolate shavings or a touch of orange zest, this is a dessert that lets the chocolate remain the star.

For more classic ideas, explore our Chocolate Brownies when you’d prefer your chocolate dessert rich, dense and fudgy.