Water Chocolate Mousse (Just 2 Ingredients!)
This water chocolate mousse is rich, smooth, and surprisingly simple to make. With just two ingredients, no cream, eggs, or chilling required, it’s a quick dessert perfect for any occasion.

Chocolate mousse usually means cream, eggs, or butter, but it’s possible to make a silky, rich version with just chocolate and water. I first tried this technique after reading about French chemist Hervé This, and it quickly became one of my go-to chocolate desserts.
The mousse turns out light, creamy, and full of chocolate flavor. Serve it with fresh berries or a sprinkle of chocolate shavings, but it’s also delicious with whipped coconut cream or orange zest.
Another favorite in my kitchen is this silken tofu chocolate mousse and chocolate avocado mousse, which are dairy-free, egg-free, and just as easy.
Recipe Highlights
- Quick and easy: Ready in under 15 minutes, perfect for last-minute desserts.
- Customizable: Add a splash of liqueur, a pinch of espresso powder, or orange zest for extra flavor.
- Mistake-proof: If something goes wrong, it’s easy to fix.
Key Ingredients & Easy Swaps
- Chocolate: Choose high-quality dark chocolate with at least 70% cocoa solids. Milk or white chocolate won’t give the same mousse-like consistency.
- Water: Use plain water, or replace part of it with brewed tea, coffee, juice, or 1 tablespoon of liqueur such as Grand Marnier, Kahlúa, or Baileys.
See the recipe card below for a detailed ingredient list and step-by-step instructions.
How to Make Chocolate Mousse with Water
- Prepare an ice bath: Fill a large bowl with ice and cold water. Put a smaller bowl inside so the bottom touches the ice water.
- Melt the chocolate: Break the chocolate into pieces and place them in a small saucepan with the water. Heat gently over low heat, stirring until smooth. Don’t let it boil.
- Whip the mousse: Pour the melted chocolate into the bowl over the ice bath. Whisk vigorously until it thickens to a pudding-like consistency. Stop whisking once thick; over-whipping can make it grainy.
- Serve: Spoon into cups or ramekins and add your favorite toppings like berries, chocolate shavings, chopped nuts, whipped cream, or flaky salt.
If your mousse turns grainy, too thick, or too runny, simply melt it again. Adjust with a little more chocolate or water if needed, then whisk over the ice bath until smooth and thickened.
How to Store
This chocolate mousse is best eaten fresh but can be stored in the fridge for up to 3 days. It may get a little thicker when cold, so let it sit a few minutes before serving if you want it softer.

More Chocolate Recipes
- Double Chocolate Muffins
- Eggless Chocolate Cake
- Flourless Chocolate Cookies
- Almond Chocolate Truffles
If you’ve made this water chocolate mousse, leave a comment and rating below. I love hearing how it turned out for you!
Adapted from Molecular Gastronomy: Exploring the Science of Flavor (Columbia University Press, 2008)
How To Make It: 2-Ingredient Chocolate Mousse (No Cream, Just Water!)
Ingredients
- 9.35 oz (265 g) dark chocolate (70% cocoa solids) chopped
- 1 cup (240 ml) water
Toppings (optional)
- Strawberries, raspberries, orange zest, chocolate shavings, crushed nuts, flaky salt, or coconut whipped cream.
Equipment
Instructions
Prepare the ice bath
- Fill a large bowl with ice and cold water. Place a slightly smaller bowl inside so the bottom touches the ice water. Set aside.
Melt the chocolate
- In a small saucepan over low heat, combine the chopped chocolate and water. Stir until melted and smooth. Do not let it boil.
Whisk
- Pour the melted chocolate mixture into the bowl over the ice bath. Whisk vigorously with a hand whisk or electric mixer until it thickens to a pudding-like texture. Be careful not to over-whisk, as it can become grainy.
Serve
- Spoon into cups or ramekins. Top with berries, chocolate shavings, a dollop of whipped cream, or a sprinkle of flaky salt.
Notes
- Chocolate: Use dark chocolate with at least 70% cocoa solids. Lower cocoa content may not set properly.
- Flavor variations: Swap some of the water with tea, coffee, juice, Kahlúa, or Baileys. You can stir in spices like cinnamon or a bit of sugar for a sweeter mousse.
- Storage: Best enjoyed fresh. Keep leftovers in the fridge for up to 3 days. It may thicken slightly after chilling.
- Troubleshooting consistency:
- Not thickening? Remelt the mixture, add more chocolate, and whisk again.
- Too thick or dense? Remelt, add a little more water, and re-whisk.
- Grainy texture? It was likely overwhipped. Remelt and start again.





Perfect velvety chocolate mousse, I used 55% chocolate. It takes a while to get to the right consistency but once it begins to really thicken it just takes a few more seconds. I would probably let it cool a few minutes before I start next time.
Absolute sorcery as others have mentioned. I didn’t have much ice and it took me 8 mins on low with a hand mixer. I’m lactose intolerant and on a deficit so this is a perfect. Thank you!
Happy you enjoyed it, Kim! :)
Can this be used with milk chocolate?
Yes, you can use milk chocolate
I had decided to make this recipe and promised it to a vegan friend who was due to come over today (awesome for it being both delicious and vegan friendly). I totally forgot about the part about the ice bath. But making ice just isn’t practical right now for me for reasons. So I decided to try it just using some cold water from the fridge. To melt the chocolate, I do chop it up decently and I microwave water in a coffee mug til it gets really really hot to the point the coffee cup handle is really hot and put that water into the chocolate, which does melt it. I put this into my iceless ice bath, stir for awhile, I change out the water at one point because that water was getting to be lukewarm, and it’s around 15 minutes into whisking and I’m thinking oh man, it’s my lack of ice bath that this is just never going to thicken isn’t it? But then, all of a sudden, it feels like there’s some resistance… and then like a minute later it’s super thick. And I’m like what kind of sorcery is this?!
So this recipe is amazing! It’s magic! It’s awesome! Even with an ice-less ice bath that’s not really an ice bath xD
So glad you liked the recipe, Natalia! Thank you for the feedback! :)
Wow this turned out amazing!! Is this magic?? It seems that at some point while I was whisking it turned into mousse in a matter of seconds and I didn’t even notice :) I just enjoyed it with some strawberries and I felt like I was eating at a fancy restaurant. Thanks for the recipe!
Happy you liked it, Elena! :)
Dear Elena,
Could this be made ahead?
If so can it be refrigerated or should it be out in room temp? :)
Thanks
Angie
Hi Angie! You can make it ahead of time and keep it in the fridge covered with cling film! :)
Oh my god what kind of black magic is this i was so shocked when i saw it turning into a chocolate mousse! , i used full cream milk Instead and added 1 tsp of sugar To the mixture, turned out perfect for me thankyou so so so much this recipe is a life saver!
So glad you liked it, Shaima! :)
This BLEW my mind. I saw it on the GBBO and couldn’t believe my eyes, so I googled it and found this recipe and I still can’t believe my eyes! Thank you SO MUCH for sharing this! Totally made my life.
I am so glad to hear that, Katherine! :D
does this actually work no lying
Several readers tried it successfully! So…no, I am not lying, it does work! :D
Brilliant recipe, will definately try it! Can I also use it as a filling for a choc mouse cake?
That’s a great idea, Adeeba!
At first I thought what BS this recipe was…. then after taking mandatory breaks (otherwise my arm would have fallen off)….. there was this amazing mousse .
You saved me from being the clinic’s disaster Christmas baker!
Glad to hear that, Julie! :D
What sweet magical sorcery is this?! I was thrilled to see this come together right in front of me.. From now on whenever I attend a family event/dinner party, I shall nominate myself to bring dessert !! Amazing <3 thank you :)
I know right?!? I was also surprised when I tried the recipe for the first time. :)
I was admittedly a little skeptical at first, but this totally works and it’s delicious! I used 80% dark chocolate, because that’s what I had on hand and it was perfect.
Thank you for your feedback, Angelique. I am glad you liked it! :)
It’s just an incredible magic! Unbelieveably easy and delicious. I skipped saucepan and melted chocolate right in the bowl by mixing with boling water from electric kettle. Oh sweet laziness! Thank you for this recipe.
You are welcome! I am glad you enjoyed it!:)
I made this tonight and am still in shock as to how perfectly delicious it turned out to be. So easy too which is a huge plus. Thank you.
Glad you liked it, Maya! :)
I’m sold! Two ingredients and you have a luscious, yummy mousse! Yes please!