Chilled lemon mousse with raspberry sauce is a two-layer showstopper that happens to be paleo: a bright, silky lemon mousse set over a jewel-bright raspberry-honey sauce. The mousse thickens over a gentle water bath with tapioca flour, then whips up light with lemon zest and vanilla. Six hours in the fridge and you have dinner-party dessert with zero last-minute work.
SERVES 6
Ingredients
Sauce
¾ cup raspberries
2 tablespoons (30 ml) honey
2 tablespoons (30 ml) water
1 pinch salt
Mousse
2½ tablespoons tapioca flour
¾ cup coconut milk
1½ teaspoons grated lemon zest
3 tablespoons (45 ml) lemon juice
1 teaspoon (5 ml) vanilla extract
⅛ teaspoon salt
3 large egg whites
6 tablespoons (90 ml) palm sugar
Preparation
1.В В Simmer all sauce ingredients in a medium saucepan over medium heat until honey is dissolved (2 to 4 minutes). Transfer sauce mixture to a blender and process until smooth (about 15 seconds). Strain the sauce through a fine-mesh strainer; you should end up with ½ cup of sauce. Spoon sauce into six four-ounce ramekins and refrigerate until chilled (about 20 minutes).
2.В В While the sauce is chilling, whisk tapioca flour, coconut milk, lemon zest and juice, vanilla, and salt together in a large metal bowl until smooth. Set bowl over a large saucepan of barely simmering water, making sure that the water does not touch the bottom of the bowl. Whisk until thickened. Immediately pour through a fine mesh strainer. Chill strained mousse for 10 minutes.
3.В В Spoon mousse evenly into chilled ramekins on top of sauce, cover tightly with plastic wrap, and refrigerate until chilled and set (six to eight hours). Serve chilled.
Pro Tips
- Chill the sauce in the ramekins for at least 20 minutes before layering the mousse — warm sauce will bleed into the lemon layer and blur the line between the two.
- Keep the water in the double boiler at a bare simmer and never touching the bowl; a hot bowl scalds the coconut milk base and makes the mousse grainy.
- Strain the mousse immediately after it thickens — this catches any tapioca lumps and gives the lemon layer its signature silk.
- Grate the lemon zest finely so it distributes evenly; long strands of zest look lovely in the raw mixture but turn chewy once set.
- The sauce should reduce to about ½ cup after straining — if you have more, simmer it a minute longer so the layers hold cleanly when spooned.
Frequently Asked Questions
How far ahead can I make this lemon mousse?
It sets in six to eight hours and holds well covered in the fridge for up to two days. Add the sauce layer first so it stays a clean, separate layer underneath.
Can I use frozen raspberries for the sauce?
Yes — simmer them straight from frozen until the honey dissolves and they break down, then blend and strain as usual. Expect the sauce to take a minute or two longer.
Why did my mousse turn out grainy?
Usually the water bath was too hot or the mixture wasn't strained. Whisk over barely simmering water only until thickened, then pour it through a fine-mesh strainer right away.
Does this mousse use gelatin or eggs in the lemon layer?
Neither — tapioca flour thickens the lemon layer, and the egg whites are saved for the raspberry-free mousse variations. The set is soft, creamy, and spoonable.
Recipe Card
Ingredients
Method
- 1. В В Simmer all sauce ingredients in a medium saucepan over medium heat until honey is dissolved (2 to 4 minutes).
- Transfer sauce mixture to a blender and process until smooth (about 15 seconds).
- Strain the sauce through a fine-mesh strainer; you should end up with ½ cup of sauce. Spoon sauce into six four-ounce ramekins and refrigerate until chilled (about 20 minutes). 2. В В While the sauce is chilling, whisk tapioca flour, coconut milk, lemon zest and juice, vanilla, and salt together in a large metal bowl until smooth.
- Set bowl over a large saucepan of barely simmering water, making sure that the water does not touch the bottom of the bowl.
- Whisk until thickened. Immediately pour through a fine mesh strainer.
- Chill strained mousse for 10 minutes. 3. В В Spoon mousse evenly into chilled ramekins on top of sauce, cover tightly with plastic wrap, and refrigerate until chilled and set (six to eight hours).
- Serve chilled.
