Incredible 1-ingredient chocolate mousse!

This is an amazing recipe. It has only ONE ingredient. Can you guess what it is? Can you? 

CHOCOLATE. That’s it. Chocolate mousse made entirely from chocolate. No eggs. No sugar. No cream. No nonsense. Just chocolate, whipped into dreamy fluffy billowy smooth mousse. Mmmmm. It manages to be both rich and light at the same time. And incredibly chocolatey, without being sickly or cloying. This is my go-to chocolate mousse recipe. Stuck for a dessert? Vegans coming for dinner? There’s always chocolate in the house, right? And you can turn it into mousse in a matter of minutes.

I’m sharing this now, so that you can make it for Pesach, should you so desire. It is a wonderful thing, a Pesach dessert that doesn’t involve any eggs. The only other one I can think of is fruit salad. Incidentally, I think this chocolate mousse would be lovely with some fruit sticks to dip into it – pear maybe? Crispy apple? Or some blueberries or raspberries on a little skewer. Yum.

If you’re anything like me, you’ll read this recipe and think, “Well, that’s never going to work.” Even now, having made this numerous times, I’m incredulous when it comes together and turns into thick, fluffy chocolate mousse. You just have to believe! You can watch this video of (a very young) Heston Blumenthal making it, if you want to see the process in action before you try it out yourself. Honestly, it really does work!

One important note – because it only has one ingredient, you need to make sure that your chocolate is really good quality and tastes absolutely delicious. You can’t get away with using bog ordinary cooking chocolate, because there’s nothing for it to hide behind. Whatever chocolate you use, that’s what you’ll taste. I pushed the boat out and made this with some Hotel Chocolat 70% dark chocolate. It was THE BUSINESS.

This amount made 4 espresso cups of chocolate mousse. Kipper ate a whole one. Eek.

chocolate mousse in espresso cups

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Incredible 1-ingredient chocolate mousse
Serves 4
Write a review
Prep Time
10 min
Total Time
10 min
Prep Time
10 min
Total Time
10 min
109 calories
10 g
1 g
7 g
1 g
4 g
78 g
4 g
7 g
0 g
2 g
Nutrition Facts
Serving Size
Amount Per Serving
Calories 109
Calories from Fat 65
% Daily Value *
Total Fat 7g
Saturated Fat 4g
Trans Fat 0g
Polyunsaturated Fat 0g
Monounsaturated Fat 2g
Cholesterol 1mg
Sodium 4mg
Total Carbohydrates 10g
Dietary Fiber 2g
Sugars 7g
Protein 1g
Vitamin A
Vitamin C
* Percent Daily Values are based on a 2,000 calorie diet. Your Daily Values may be higher or lower depending on your calorie needs.
  1. 75g dark chocolate
You will also need
  1. 2 bowls, one of which will fit inside the other
  2. ice
  3. an electric whisk, or a balloon whisk and good arm muscles
  1. Break the chocolate into a pan and add 75ml water. Heat the mixture until the chocolate has melted and amalgamated with the water into a soupy brown liquid.
  2. Put a good handful of ice into the larger of the two bowls, and put the smaller bowl on top of the ice. Pour the chocolate-water mixture into the inner bowl.
  3. Whisk like mad for a few minutes, until the chocolate mixture thickens and becomes mousse-like.
  4. Spoon into small bowls or espresso cups. Chill for at least an hour, until set.
  1. You can speed up the chilling step by putting the cups of mousse into the freezer, instead of the fridge.
chocolate mousse - whisking


chocolate mousse

Ta da! 

chocolate mousse - all gone!

All gone!

I’m entering this in the Dead Easy Desserts challenge – it doesn’t get much easier than only one ingredient!


  1. I’ve been making this for years, and it’s wonderful! I got the original idea from a Food 52 “Genius Recipe”, amped it up with orange, and use it as a filling for a kosher for Passover dessert torte.

  2. Hey… My mousse didnt thicken… Any idea why?

    • Hi Disha. Sorry to hear the mousse didn’t thicken. I had this happen once because I hadn’t let the chocolate/water mixture fully amalgamate. I reheated it on the stove and then tried again and second time it whipped up perfectly. I hope you have success next time! Thanks, Helen.

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  4. My pleasure! Loving all the dessert ideas on Dead Easy Desserts – no excuse for skipping ‘afters’ now 🙂

  5. Pingback:The Spicy Pear | Dead Easy Desserts

  6. Never come across this technique before, sounds well worth a bash! Thanks for sending to Dead Easy Desserts!

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