Lemon meringue cheesecake

A showstopping no-bake lemon meringue cheesecake that delivers bright, zesty flavours with every creamy bite. A crunchy ginger and digestive biscuit base supports a luscious white chocolate and lemon filling, while billowy Italian meringue is blowtorched to golden perfection.

This indulgent dessert has a Nutri-Score rating of E due to its rich combination of butter, double cream, mascarpone, sugar, and white chocolate. Enjoy it as a delightful treat for special occasions within a balanced diet.

How the Timings Work

• Stage 1 (15 minutes): Crush biscuits, melt 150g unsalted butter, and press the crust into the tin; transfer to the fridge to chill.
• Stage 2 (20 minutes): Melt 400g white chocolate gently, whip the dairy components with citrus zest, ripple through 150g lemon curd, and assemble the base.
• Stage 3 (3 to 4 hours – passive): Chill the cheesecake in the refrigerator until completely firm and set.
• Stage 4 (20 minutes): Boil the sugar syrup to 115-120C, whip into egg whites to make Italian meringue, spoon over the chilled base, and blowtorch to finish.

Method

1. Prepare the biscuit base (15 mins)

1. Crush the biscuits. Place 150g digestive biscuits and 150g ginger biscuits into a sturdy resealable bag. Crush them thoroughly using a rolling pin until you achieve fine, uniform crumbs.
2. Melt the butter. Place 150g unsalted butter into a large heavy-based saucepan over low heat. Once melted, stir in the biscuit crumbs until thoroughly coated and moist.
3. Form the crust. Tip the buttered crumb mixture into the base of a 20cm springform cake tin. Press the mixture down firmly using the back of a metal spoon, bringing it about 5cm up the sides to create an even crust. Cover and place in the fridge to set while preparing the filling.

2. Make the cheesecake filling (20 mins + chilling)

1. Melt the white chocolate. Place 400g white chocolate into a heatproof glass mixing bowl set over a small pan of barely simmering water – ensure the bowl base does not touch the water. Stir occasionally until completely melted, then remove from heat to cool slightly.
2. Whip the dairy base. Combine 250g cream cheese, 200ml double cream, and 250g mascarpone in a stand mixer bowl fitted with a whisk, or use an electric hand whisk. Beat until the mixture turns very thick, stable, and mousse-like.
3. Incorporate citrus and chocolate. Gently beat the cooled melted white chocolate and the zest of 2 unwaxed lemons into the cream mixture until just combined – do not over-mix.
4. Layer and set. Gently fold half (150g) of the lemon curd through the mixture to create decorative swirls. Spoon into the chilled biscuit base, smoothing the top evenly. Spread the remaining 150g lemon curd across the surface. Cover and chill in the fridge for at least 3 to 4 hours until firmly set.

3. Prepare the Italian meringue and serve (20 mins)

1. Whisk the egg whites. Place 4 large free-range egg whites into a clean glass or metal bowl. Using your electric hand whisk, beat them to stiff peaks.
2. Boil the sugar syrup. Combine 340g white caster sugar and 170ml water in a deep saucepan. Stir gently over low heat until the sugar dissolves. Once clear, stop stirring, raise the heat, and boil until the liquid reaches 115-120C on a sugar thermometer – handle with extreme care as hot sugar causes severe burns.
3. Whip into glossy peaks. Resume whisking the egg whites on medium speed. Slowly pour the hot sugar syrup into the whites in a thin, continuous stream, avoiding the beaters. Add ¼ tsp cream of tartar and 1 pinch fine salt, then whisk continuously for 7 to 10 minutes until thick, glossy, and cooled to room temperature.
4. Finish and blowtorch. Release the set cheesecake from the tin and slide onto a platter. Heap the meringue on top in decorative billows. Toast lightly using a cook’s blowtorch until pale golden. Slice with a hot knife, wiping clean between cuts.

Techniques for Success

1. Sugar syrup temperature control for Italian meringue

   Failure if done wrong: If the syrup is below 115C, the egg whites will not pasteurise or set properly, resulting in a runny, weeping meringue that collapses. If overheated past 120C, the sugar turns to hard caramel, forming solid threads inside the meringue.

   Step-by-step checks: Clip a sugar thermometer to your saucepan, ensure the bulb is fully submerged in liquid without touching the pan bottom, and watch closely as it reaches soft-ball stage (115-120C).
   Visual and physical signs of success: The syrup bubbles consistently and thickens into a clear, golden-tinted syrup that streams smoothly off a spoon.

   Finished result profile: A glossy, marshmallow-like meringue topping that holds tall, stable peaks without weeping syrup onto the cheesecake layer.

2. Gently melting white chocolate over a bain-marie

   Failure if done wrong: Direct heat or steam contact causes white chocolate to seize into a grainy, clumpy lump that ruins the cheesecake texture.

   Step-by-step checks: Place a heatproof bowl over a pan containing 2cm of gently simmering water. Ensure the bottom of the bowl never touches the water surface.Visual and physical signs of success: The chocolate melts gradually into a silky, completely fluid texture with a glossy shine.

   Finished result profile: A velvety white chocolate cream cheese filling with zero graininess or fat separation.

3. Packing and setting the biscuit crust

   Failure if done wrong: Loose crumb packing or insufficient butter integration causes the crust to crumble into loose dust when slicing the dessert.

   Step-by-step checks: Mix melted butter thoroughly into crumbs until all grains are coated, then compress firmly against the tin sides using the back of a spoon.Visual and physical signs of success: A solid, cohesive border that holds its shape tightly along the walls of the cake tin.

   Finished result profile: A crisp, buttery ginger crust that cuts cleanly into neat slices without breaking apart.

Tips & Swaps

• Get ahead: Make the cheesecake base up to 24 hours in advance and keep chilled in the fridge. Prepare and torch the fresh Italian meringue on the day of serving.
• Swaps: Substitute ginger biscuits with extra digestives or shortbread if you prefer a less spicy base.
• Vegetarians: Ensure your white chocolate and store-bought lemon curd use vegetarian-friendly emulsifiers and gelling agents.
• Leftovers: Store leftovers covered in an airtight container in the refrigerator for up to 3 days; do not freeze as the meringue will weep.

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