French Dark Chocolate Mousse (Mousse au Chocolat)

Traditional French Chocolate Mousse Ingredients

Trust the French to transform four simple yet good quality ingredients into a most elegant dessert. This French 'mousse au chocolat' recipe essentially consists of 70% dark chocolate with whipped, organic egg whites making it extremely light.

It's a fluffy yet still intense French recipe for dark chocolate mousse - without cream or butter.

It's not unlike this egg white-based light-as-a-feather white chocolate mousse with orange blossom.

Is Mousse from France? Some History

According to my Larousse Gastronomique, a Mousse is from France. According to journalist Olivier Poels for Europe 1 channel, it was around during King Louis XVI time in the 18th century thanks to the royal Swiss cook, Charles Fazi. As I would recount in my Parisian chocolate tours, Queen Marie-Antoinette was also partial to her chocolate, procuring such a luxury at the time via the pharmacies to avoid paying taxes on medicines.

It wasn't until slightly later in 1820 that the term, "mousse" came on the scene by the royal chef, Viard. He wrote out the royal recipe for chocolate mousse and, from then on, was made in well-to-do households and gradually became popular.

Even artist, Toulouse-Lautrec created a French chocolate mousse not unlike this recipe below. He mixed together cacao with whipped egg whites, adding sugar and butter.

What Does Mousse Mean in French?

French 'Mousse' is literally translated as 'foam' and can be savoury as well as sweet. 

It's created by whipping up many egg whites to achieve this. Whipped cream is normally not used - although many recipes add a touch of cream to lighten it up if you're not used to intense dark (bittersweet) chocolate. No gelatin is needed in this recipe to set the chocolate, but it's often added to many mousses, like this strawberry mousse.

Can you make it without cream? Absolutely! In fact, I personally prefer it made this way like the French do - without it. That way the chocolate's flavour completely shines through.

What Chocolate is Best for Dark Chocolate Mousse?

In this chocolate mousse recipe, I use 70% bittersweet (dark) couverture chocolate.

The better quality the chocolate, the better this mousse will be. One of my best-loved dark cooking chocolate is Nestlé's Corsé tablets with 64% cocoa.

Even more intense in chocolate, then use Cacao Barry's 72% Venezuelan chocolate. It has complicated flavours of wine, black olives and a woodiness that comes from using two cacao beans, Criollo (the most rare) and Trinitario. Ever since I heard about Lindt's unsafe levels of lead (lawsuit November 2024), I no longer use this brand.

What Can Go Wrong With Chocolate Mousse?

The recipe is easy, using a few best quality ingredients: good bittersweet (couverture) chocolate - I use 70% cacao; a spoonful of unsweetened cocoa powder, a little sugar, fresh & organic egg whites and only one optional egg yolk.

However, what can possibly go wrong when making chocolate mousse?
The chocolate should be melted and no more. If it gets too hot, it can seize. It doesn't matter for the egg whites (although room temperature makes it easier), but if the yolk is cold and added to the chocolate it will seize the chocolate mixture while added. If this does happen, then just add a spoon of boiling water to fix it.
So, here are my recipe tips for the perfect dessert:

• Don't overcook the chocolate. Take it off the heat as soon as it has melted.
• Ensure your egg yolk is at room temperature.
• Moreover, to make it EVEN EASIER, add the egg yolk to the whites at the END of whipping.
• 2-3 days' old egg whites whip and mousse up even easier than fresh, creating lovely stiff peaks - just like for macarons.

Seizing of Chocolate Problem completely solved!

French Chocolate Mousse Recipe - Without Cream

What makes an authentic French chocolate mousse? As you can see from the recipe below, it is made without any cream.

The whipped egg whites make this light and fluffy to appreciate the good quality of the chocolate. So the result is an intense mousse for the most gourmet of chocolate lovers.

Melt (good quality) dark chocolate and unsweetened chocolate powder together over a pan of simmering water (bain-marie or water boiler) until just melted. Take off the heat, then fold in whipped egg whites with a little sugar and an egg yolk (as if as an afterthought).

Although slightly tweaked with more dark chocolate, less cocoa powder and the addition of salt, this is my favourite recipe originally inspired by chef Raymond Blanc. I also added the yolk in the egg whites rather than adding it to the chocolate.

Perfect Egg White Dessert Recipe

What you can do with egg whites for dessert? You're in luck! This recipe uses six fresh egg whites. For only 3 whites, try this strawberry mousse.

Only ONE egg yolk is used, although it's optional as I've discovered it's a recipe that works well also without it.

How Long do Egg Whites Last in the Fridge?

Egg whites can last for 5 days - even up to a week - in the fridge.  I normally store them sealed in a clean jam jar. What's more, egg whites freeze well.

So if you're making any of the egg yolk recipes, keep the whites aside and freeze them until needed. I like to defrost them overnight.

French Dark Mousse au Chocolat - Low in Sugar

Little sugar is used in this healthy chocolate mousse.  As I have learned from many French pastry chefs, too much sugar not only makes the mousse become grainy but it also interferes with the flavour of the intense, dark chocolate.
What's the point of having good quality ingredients if you mask it with too much sugar?

For another healthy mousse recipe, see my white chocolate mousse - it's made with cream but no added sugar.

How Long Does Chocolate Mousse Take to Set in the Fridge?

This light and fluffy French chocolate mousse only takes about 2 hours to chill and set in the fridge. What's more, if you have any leftovers, it can keep in the fridge for 2-3 days. Just spoon into serving dishes before chilling and you're done. See my video recipe below.

Serving Ideas for French Chocolate Mousse

What can you serve with it? In most French restaurants, chocolate mousse traditionally arrives with a simple dusting of unsweetened cocoa powder on top. C'est tout (that's it)! However, if you like the extra frills and garnishes, serve with

• Coconut macaroons
• French tuiles, or edible flowers
• Love nuts? Top with toasted nuts or this delicious soft caramel nougatine
• Fruits: I love to top it with fresh cherries in summer or in winter with pears, boozy cherries, clementines or candied chestnuts
• Raspberry Macarons or salted caramel macarons
• French butter cookies (Palets Bretons) using some of the remaining egg yolks.

More French Chocolate Desserts

I have more of our favourite French mousses. Try a tropical version, also made without cream, chocolate mousse with passion fruit - or a white chocolate mousse with orange blossom and rose. Plus try even more chocolate desserts.