Pure 100% Cacao Chocolate Mousse Recipe by Patrice Chapon

Pure chocolate mousse recipe by Patrice Chapon in Paris using the strongest 100% cacao content plus a brief description how chocolate is made.

chocolate mousse bar

How many chocolate storefronts do you know resemble dark chocolate?  Every time I walk past the Chapon boutique in Paris’s pastry street of rue du Bac, I could almost lick off the writing imagining it’s made of cocoa butter and gold leaf.

Patrice Chapon has been making his chocolate since 1985 from “bean-to-bar” from his workshop in Chelles (a suburb 20km north-east of Paris).

Chapon Chocolate Shop in Rue du Bac

Originally a restaurant chef then pastry chef in Deauville, Monsieur Chapon then popped over the Channel for a short stint as official ice-cream maker to the Royal Family at Buckingham Palace – how cool is it to have had the Queen Mother surprise you one day with rose petals from the royal gardens, asking you to make a sorbet with them? After inspiration from Harrod’s food hall, he realised his real vocation was back in France making chocolate and by 2005, he opened this second shop in Paris.

It takes 10 days to make the chocolate as we see it in the store. Even the cacao growers in the tropics (10° North or South of the Equator) are amazed at what final result can be achieved from these simple looking beans.

He procures the beans after they’ve been fermented and dried, then does the rest himself. He grills them – 20 kilos at a time – for about 30 minutes at 105°C until they start to smell and taste like chocolate, even if still bitter at this stage. After grinding to obtain cocoa nibs then 8 hours maturing, he adds sugar (and powdered milk for milk chocolate), he continues to grind then liquify the cacao by a method called conching. Any acids or bitterness disappear after at least 48 hours and as if by magic, the end result after tempering and mixing, we’re left to discover the end result.

Chapon chocolate shop Paris rue du Bac

Tasting Different Kinds of Chocolates in Paris

Tasting our way through the characteristic tropical-patterned packaged chocolate bars, each variety has its own subtle but particular flavours: Cuba has notes of spice and exotic fruits, Lucie agreed that Ghana has banana notes, and Madagascar has real after-notes of red fruits.

With wide-eyed children looking on at the generous samples laid out in front of us, Chapon surprised them with his witty Willy Wonka remark in French, “With this ticket, adults have a tasting of a chocolate mousse cone; children have their tasting of salsify” (which is a popular root that’s served as vegetable here, especially I hear at the school canteen).

Their confused expressions were quickly transformed as their eyes feasted on chocolate lollipops.

domes fondant au sel or salted dark chocolate domes best award paris

Chapon’s Most Popular Chocolates

My eyes were for the salted praline Dômes au Sel, winners of the Mairie de Paris Chocolate Grand Prix in 2003.

Chapon chocolaterie Paris rue du Bac

Ratio of Chocolate in French Chocolate Mousses

True to the chocolate bars, the mousses were so dense in chocolate, yet light and airy.  Chapon states that he uses about 20-30% less chocolate in his mousses due to the high cocoa content than more standard chocolate mousses that our grandmothers made.

As I left the boutique, realising again that I’d bought way too much chocolate (confessions of a chocoholic), I noticed that the recipe for the legendary chocolate mousse was printed on the brown paper bag.

pure dark chocolate mousse Venezuela Chapon

What Does the Strongest 100% Cacao Chocolate Mousse Taste Like?

With so many chocolate varieties to choose from, I thought I’d be adventurous and go for the 100% pure cacao Rio Caribe of Venezuela.  On the tablet’s back label, it even specifies “100% minimum”, which would excite any cocoa connoisseur!

If I have to make one remark, the recipe’s chocolate quantity of 185g isn’t that ideal for us shoppers, since most of the tablets are 75g and so with two bars I was 35g short of pure Venezuela.

As it’s 100%, also note that it’s drier than most classic mousses.  The aftertaste is intense – a little goes a long way to appreciate the flavours. Just as in wine-tasting, I’d even go as far as to say that this chocolate mousse is earthy or as we say in wine terms, “sous bois” or undergrowth (for more on tasting, see my post about different notes on the nose).  It was almost leafy or, dare I say, mossy. In French, moss is mousse – so I’ll leave you to groan at that pun!

Chapon chocolate mousse recipe ingredients

Pure 100% Cacao Chocolate Mousse Recipe by Patrice Chapon

Patrice Chapon states the best chocolate to use for his mousse is 100% Rio Caribe. However, if you don’t want to use a strong 100% cacao tablet, use either Equagha, équateur, Mexique or Brésil from his choice of chocolate tablets.

Pure chocolate mousse Patrice Chapon Recipe

Serving suggestion: spoon into Almond Tuiles from my new book, Teatime in Paris!

100% pure chocolate mousse recipe by Chapon served with French tuiles

Serve with French Almond Tuiles for dessert

If you’re in Paris, either drop in and taste the mousse for yourself at Chapon’s boutiques.

69, rue du Bac, 75007 Paris
Tel. 01-42 22 95 98

See my article for more on the chocolate and pastry shops on rue du Bac, Paris.

chapon chocolate shop Paris

chocolate mousse bar

100% Chocolate Mousse by Chapon Paris

Author: Jill Colonna
Prep Time15 mins
Cook Time15 mins
Chilling Time6 hrs
Total Time6 hrs 30 mins
Course : Dessert
Cuisine : French
Keyword : 100% chocolate mousse recipe, French chocolate mousse
Servings : 6 people


Patrice Chapon states the best chocolate to use for his mousse is 100% Rio Caribe. However, if you don't want to use a strong 100% cacao tablet, use either Equagha, équateur, Mexique or Brésil from his choice of chocolate tablets.


  • 185 g Pure origin Chocolate Chapon (I used 100% Venezuela Rio Caribe)
  • 100 g semi-skimmed fresh milk
  • 1 egg yolk
  • 6 egg whites
  • 37 g cane sugar


  • Heat the milk until it boils. Grate the chocolate in a large bowl.
  • Pour the hot milk over the grated chocolate and stir gently until well mixed using a wooden spoon.  Add the yolk and continue to stir until the mixture is brilliant.
  • In a separate bowl, whip up the egg whites using an electric whisk, adding half of the sugar at first and then at the end when they are whipped and fluffy (but not firm).
  • Gradually incorporate the egg whites, folding it in delicately until all mixed together and smooth.
  • Either keep it in the bowl or transfer to individual serving bowls (I would suggest little ones here, as this mousse is so intense!)
  • Refrigerate overnight (I suggest covering with cling film) and enjoy next day.


Serve with almond tuiles or macarons (recipes in my book, Teatime in Paris)
Disclaimer: This post was not sponsored in any way and I was not asked to write about Chapon in Paris.

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10 responses to “Pure 100% Cacao Chocolate Mousse Recipe by Patrice Chapon”

  1. […] Chocolate mousse – the traditional chocolate mousse bar run by the famous house, Chapon – here’s Patrice Chapon’s recipe for his 100% cacao Chocolate Mousse. […]

  2. Bac Sucré Event 2016: 2nd Fruity Edition on Paris Pastry Street | Mad about Macarons! Le Teatime Blog in Paris says:

    […] from the bar – including the Venezuelan 100% Chocolate Mousse (I recently made the recipe here on le blog), or his prize-winning chocolate with a salted dome (chocolat au dôme de […]

  3. From these photos Jill I can almost smell the chocolate. I will definitely visit Chapon’s Boutiques when next in France. The Domes au Sel take my fancy.

    • You’re so right Thomasina. I forgot to mention that’s one of the first thing that strikes you when you walk in to a shop like this – blown over with the smell of dark, intense chocolate! You’ll love it your next trip.

  4. I’ve seen 100% chocolate lately but didn’t even make the move to try it since thought it would be too bitter. Although I hear it’s good for your health.

    • I was the same Jean-Pierre. But surprised that it wasn’t as bitter as I thought. Intense and dry, sure, but the flavours that come through are really pure – and knowing that it has more iron (as well as other nutrients) than other chocolate bars, it’s definitely worth trying. In small doses!

  5. Chapon has certainly had an illustrious career!!! How fun that you and Lucie got to meet him. And that mousse looks divine!!

    • Monsieur Chapon is a real gem Liz. I can feel a visit to his chocolate workshop coming in the near future since I’m dying to see it and share it with you!

  6. Wow! That mousse even LOOKS intense! I can imagine the flavor and decadence! Oh, it is so unfair to be so many thousands of miles away from these amazing treats! I’m off to eat a Kit Kat 🙁

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