Imagine a spoonful of sunshine on your tongue, zesty and cool with a whisper of sweetness that wakes up your senses and makes you smile.
This lemon mousse is the kind of dessert you want for a relaxed Sunday afternoon, for a dinner party finale, or when you simply crave something tart and refreshing.
SaveI first made it on a breezy porch at dusk, watching the sky turn pink while that silky lemon aroma drifted through the air and everyone leaned in for seconds.
Lemon Mousse Recipe
Ingredients
Instructions
- Whisk yolks, sugar, flour, and salt
In a medium bowl, whisk the egg yolks, sugar, flour, and salt until smooth and pale to help create a thick, stable base.
- Stir in lemon juice and zest
Whisk in the fresh lemon juice and zest until fully combined so the citrus flavor blooms through the mixture.
- Warm milk and cream in a saucepan
In a small saucepan, combine the milk and cream with the lemon mixture over medium low heat, stirring gently until just steaming and coated on the back of a spoon.
- Temper the egg mixture
Slowly pour a thin stream of warm lemon mixture into the egg yolk bowl while whisking constantly to prevent curdling.
- Cook and thicken the mousse base
Return the tempered mixture to the saucepan and cook over medium low heat, stirring constantly, until it becomes thick enough to coat the back of a spoon.
- Add butter for richness
Remove from heat and stir in the butter and a pinch of sea salt until melted and glossy for a silky finish.
- Strain into a clean pitcher
Pour the mixture through a fine mesh sieve into a heatproof pitcher to remove any small cooked bits for extra smooth texture.
- Chill until cold
Refrigerate the lemon mixture for at least 3 to 4 hours, or until thoroughly chilled, so the mousse will whip up light and fluffy.
- Whip until soft peaks form
Using a hand mixer or stand mixer, whip the chilled mixture on medium speed until stiff peaks form for a cloud like mousse texture.
- Serve or store
Scoop into glasses or a serving bowl, garnish with zest if desired, and keep covered in the fridge until ready to enjoy.
Substitutions and variations
- Use pasteurized egg yolks or egg substitute if concerned about raw eggs.
- Swap heavy cream with coconut cream for a dairy free version.
- Replace some of the lemon juice with lime juice for a twist on citrus flavor.
- Use powdered sugar instead of granulated sugar if you prefer a smoother texture.
Chloe's tips
- For extra stable mousse, whip the heavy cream separately until soft peaks and fold it into the lemon mixture gently.
- Taste and adjust sweetness with an extra tablespoon of sugar if your lemons are particularly tart or mild.
- Use a fine mesh sieve for straining to achieve a restaurant quality, velvety smooth mousse.
- Chill your mixing bowl and beaters in the freezer for 10 minutes before whipping to help the mousse hold its shape.
How to store it
- Store in an airtight container in the refrigerator for up to 3 days.
- Freeze in a sealed container for up to 1 month and thaw in the fridge overnight before serving.
Serving suggestions
Serve this lemon mousse in elegant glasses with fresh berries or a few curls of lemon zest on top.
- Pair with shortbread cookies for a buttery crunch.
- Float a few raspberries on top for a pop of color and extra tart contrast.
- Drizzle lightly with honey or a berry coulis for a dessert that looks restaurant worthy.
Frequently asked questions
Can I make this lemon mousse without an electric mixer?
Yes, you can whip the chilled mixture with a whisk by hand, but it will take longer and the mousse will be lighter if you use an electric mixer.
Why did my mousse turn out runny?
It may not have been chilled long enough or the egg mixture might have been undercooked; cook until it thickly coats the back of a spoon and chill thoroughly.
Is this mousse safe to eat with raw egg yolks?
Using fresh, high quality eggs and pasteurized yolks reduces risk; if you are concerned, use a pasteurized egg product or gently heat the yolks with sugar before mixing.
Can I make this ahead for a party?
Absolutely, prepare and chill it up to 24 hours in advance and top with whipped cream and zest right before serving.
Let's get cooking!
I hope you enjoy making this bright lemon mousse as much as I do sharing it; it feels fancy yet simple, and every spoonful is a little burst of sunny, creamy joy.
