This pistachio mousse is made with four ingredients: white chocolate, pistachio cream, cream and a pinch of salt. It uses no eggs and no gelatin. It's a whipped white chocolate ganache that chills in the fridge, then whips into a soft, airy mousse for piping into glasses. Dairy or dairy-free cream both work.
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TL;DR (Quick-Answer Box)
- What it is: A pistachio mousse made with white chocolate, pistachio cream, cream and salt. It's essentially a whipped white chocolate truffle ganache, with pistachio flavor through every spoonful.
- Why you'll love it: You get the soft, airy texture of a mousse without any eggs or gelatin. It works with dairy or dairy-free cream, and it doubles as a cake or tart filling. Hands-on time is about 10 minutes, and the fridge does the rest.
- How to make it: I pour hot cream over the chocolate, pistachio cream and salt, stir until smooth, then stir in the cold cream. The mixture chills under cling wrap for 6 to 8 hours. Then I whip it cold to stiff peaks, stopping as soon as the mixer leaves trails, and pipe it into dessert glasses.
Why This Pistachio Mousse Works
- No eggs or gelatin needed. The white chocolate gives the mousse its structure. Once the ganache is fully chilled and whipped, it holds its shape on its own.
- Hot and cold cream split. Melting the chocolate in half the cream, then stirring in the other half cold, brings the temperature down faster so the mixture chills sooner. It's the same method I use for my whipped ganache dark chocolate mousse, so if you've made that one, this will feel familiar.
- Built-in pistachio flavor. The pistachio cream melts straight into the ganache, so the flavor runs through the whole mousse instead of sitting on top.
- A pinch of salt. Salt balances the sweetness of the white chocolate and brings out the pistachio.
- Easy to read when it's done. Stop whipping as soon as the mixer leaves trails. That's your cue to stop before it overmixes.
- Works with dairy or dairy-free cream. Any cream that whips to stiff peaks can be used.
- Ten minutes of hands-on time. The fridge does most of the work.
Ingredients Used
- White chocolate: This gives the mousse its structure and sweetness. Once the ganache is chilled and whipped, the cocoa butter in the chocolate is what holds it in shape, so there's no need for eggs or gelatin. I used Moser Roth Finest Madagascan Vanilla white chocolate, and 250g is exactly two 125g blocks. Any good-quality white chocolate you enjoy eating will work.
- Pistachio cream: This is where all the pistachio flavor and color comes from. Choose a thick, spreadable pistachio cream. High-oil pastes or creams can split the mousse. Pistachio paste works too, as long as it isn't runny and oily.
- Cream: Any cream that whips to stiff peaks works here, dairy or dairy free. It's split in half. The hot half melts the chocolate, and the cold half brings the temperature down so the mixture chills faster.
- Salt: Just ¼ teaspoon balances the sweetness of the white chocolate and brings out the pistachio flavor.
For a dairy-free mousse, use dairy-free white chocolate and check that your pistachio cream or paste contains no milk.
How to Make Pistachio Mousse
Start by chopping the white chocolate into small pieces and adding it to a heatproof bowl with the pistachio cream and salt. Take a minute to chop it small, because smaller pieces melt faster and more evenly.
Heat half the cream in a saucepan until it just comes to a boil, then take it off the heat and pour it straight over the chocolate mixture.
Stir until everything comes together into a smooth ganache. Keep going until there are no unmelted bits of chocolate left in the bottom of the bowl.
Now pour in the other half of the cream, straight from the fridge, and stir it through well. I add this half cold for a reason: it brings the temperature down quickly, so the mixture is ready to chill sooner.
Press cling wrap directly onto the surface of the ganache so a skin doesn't form. Pop it in the fridge for 6 to 8 hours, until it's fully chilled all the way through. Don't rush this step. The mixture needs to be properly cold to whip into a mousse.
Take the bowl straight from the fridge and whip the mixture while it's still cold. Watch it closely. As soon as the mixer leaves trails, you've reached stiff peaks, so stop there. Overwhipping can make it grainy.
Spoon the mousse into a piping bag and pipe it into small dessert glasses. You'll get about 6, depending on the size of your glasses.
Variations
Dairy-Free Pistachio Mousse
This mousse works with dairy-free cream too, as long as it whips to stiff peaks. For a fully dairy-free version, use dairy-free white chocolate as well, and check the label on your pistachio cream or paste. Many pistachio creams contain milk powder, while pure pistachio paste is usually just pistachios.
Pistachio Paste Instead of Pistachio Cream
You can swap the pistachio cream for pistachio paste. Just choose one that's thick and spreadable rather than runny and oily, because high-oil pastes can split the mousse.
As a Cake or Tart Filling
At its heart, this is a whipped white chocolate truffle ganache, so it makes a great filling for layer cakes and tart cases. Whip it the same way and use it straight away. For tarts, pipe it into my buttery sweet shortcrust pastry cases, which need no blind baking, or my cocoa-rich chocolate tart shells for a darker contrast with the pistachio.
Pistachio Mousse Questions, Answered
No. It's an eggless mousse with no gelatin. The white chocolate gives it structure. Once the ganache is fully chilled and whipped, it holds its shape on its own.
The two most common causes are a high-oil pistachio paste or cream, and overwhipping. Choose a thick, spreadable pistachio cream rather than a runny, oily one. When you whip, stop as soon as the mixer leaves trails.
The ganache probably wasn't cold enough. It needs 6 to 8 hours in the fridge, until it's fully chilled all the way through. Whip it straight from the fridge.
Yes. Use any dairy-free cream that whips to stiff peaks, along with dairy-free white chocolate. Check your pistachio cream or paste too, because many pistachio creams contain milk powder.
Yes, as long as it's thick and spreadable. Runny, high-oil pastes can split the mousse.
Yes. It's a whipped white chocolate truffle ganache, so it works well between cake layers and in tart cases. Pipe a dam around the edge of each layer first to hold it in place.
Yes. You can make it up to 3 days ahead and keep it covered in the fridge. Add toppings just before serving.
Pro Tips & Troubleshooting
Pro Tips
- Chop the chocolate small. Smaller pieces melt evenly in the hot cream, so you won't be left with lumps.
- Choose a thick pistachio cream. A spreadable pistachio cream or paste keeps the mousse stable. Runny, high-oil versions can cause it to split.
- Press the cling wrap onto the surface. This stops a skin forming while the ganache chills.
- Give it the full chill. The ganache needs 6 to 8 hours, until it's cold all the way through. Overnight works too.
- Whip on medium speed. It thickens quickly, so a medium speed gives you more control and makes it easier to stop at the right moment.
- Whip it in the same bowl. I chill the ganache and whip it in the same bowl, so the bowl is already cold when I start. There's no extra step needed.
- Stop when you see trails. As soon as the mixer leaves trails in the mixture, you've reached stiff peaks.
Troubleshooting
- Mousse split or looks oily: This usually comes from a high-oil pistachio paste or cream. Next time, switch to a thicker, spreadable one.
- Mousse turned grainy: It was overwhipped. Stop the moment the mixer starts leaving trails.
- Mousse won't thicken: The ganache wasn't cold enough. Return it to the fridge until it's fully chilled, then whip again.
- Lumps of chocolate in the ganache: The chocolate pieces were too big, or the cream wasn't hot enough. Chop the chocolate finely and bring the cream right to boiling point.
What to Serve with Pistachio Mousse
This pistachio mousse is rich, so small glasses work best. Here are a few easy ways to finish or pair it:
- Chopped pistachios: Scatter some over the top for crunch and a pop of green.
- Fresh raspberries: Their tartness cuts through the sweetness of the white chocolate. A drizzle of my quick raspberry sauce works too.
- White chocolate shavings: These echo the white chocolate in the mousse and look pretty on top.
- In tart cases: Pipe it into baked tart shells for a plated dessert. The links are in the Variations section above.
- Alongside coffee: A small glass of mousse with an espresso makes an easy after-dinner dessert.
Storage & Serving
Serving: Serve the mousse chilled, straight from the fridge. Small glasses work best because it's rich. You'll get about 6, depending on the size of your glasses.
Make Ahead and Fridge Storage: You can make this mousse up to 3 days ahead. Cover each glass with plastic wrap so it doesn't pick up fridge smells. Add any toppings, like chopped pistachios, just before serving so they stay crunchy.
Freezing: I don't freeze this mousse. It's so quick and easy to make ahead that there's really no need.
More Pistachio Desserts
- Pistachio French Macarons with Pistachio Ganache: Crisp macaron shells sandwiched with a pistachio ganache filling.
- Pistachio Shortbread Cookies: Buttery pistachio shortbread finished with white chocolate.
- Pistachio Ice Cream: Creamy homemade ice cream with a rich, nutty pistachio flavor.
- No-Bake Pistachio Tiramisu Cheesecake: Pistachio cheesecake layered with coffee-soaked ladyfingers, no oven needed.
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Pistachio Mousse with White Chocolate
INGREDIENTS
- 250 g (2 cups) white chocolate chopped
- ½ cup pistachio paste or pistachio cream
- ¼ teaspoon salt
- 600 ml (2½ cups) cream dairy or dairy-free cream that whips to stiff peaks, divided into 300ml (1 ¼ cups) portions
- 1 tablespoon pistachios (optional) chopped for garnish
INSTRUCTIONS
- Chop the white chocolate into small pieces and place it in a heatproof bowl with the pistachio cream and salt. Smaller pieces melt faster and more evenly.
- Heat half of the cream until it just comes to a boil, then take it off the heat right away.
- Pour the hot cream over the chocolate mixture and stir until it's completely smooth, with no unmelted bits of chocolate left.
- Pour in the remaining 300ml (1 ¼ cups) of cold cream and stir well. I add this half cold because it brings the temperature down faster, so the mixture chills sooner.
- Cover the bowl with cling wrap pressed right onto the surface so a skin doesn't form. Refrigerate for 6 to 8 hours, until it's fully chilled all the way through.
- Take it straight from the fridge and whip it while it's still cold. Whip to stiff peaks and watch it closely. It's ready as soon as the mixer leaves trails in the mixture, so stop there and don't overmix.
- Spoon it into a piping bag and pipe into small dessert glasses. You'll get about 6, depending on the size of your glasses. You can also just spoon directly into the glasses instead of piping.
NOTES
- Pistachio paste swap: You can use pistachio paste in place of pistachio cream, as long as it isn't a high-oil paste (see below).
- Avoid high-oil pastes and creams: Pistachio pastes or creams with a high oil content can split the mousse. Choose a thick, spreadable one rather than a runny, oily one.
- Dairy or dairy free: Any cream that whips to stiff peaks works, dairy or plant based. For a dairy-free mousse, also use dairy-free white chocolate and check that your pistachio cream or paste contains no milk. Pure pistachio paste is usually just pistachios.
- Whip it cold: Make sure the base is fully chilled before whipping, or it won't hold its shape.
- Watch the mixer: Stop as soon as the beaters leave trails. Overwhipped ganache can turn grainy.
- Other uses: This is a whipped white chocolate truffle ganache, so it also works as a cake filling or a tart filling.
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