Make the Crust

• Use a food processor, blender, or Thermomix to finely crush the digestive biscuits (or graham crackers) until they resemble sand.

• Transfer the crumbs to a mixing bowl. Add the melted butter and sugar (only if your biscuits aren’t sweet enough). Stir with a spatula until the mixture is well combined and resembles wet sand.

• Lightly grease a 22–23 cm (9-inch) pie dish. Pour the crumb mixture in and press it evenly into the bottom and up the sides of the dish. Use the flat bottom of a small glass or mortar to pack it firmly and create a smooth, even base.

• Preheat your oven to 180°C (350°F). Bake the crust for 10 minutes until slightly golden and set. Remove and let it cool completely while you prepare the filling.

Make the Key Lime Filling

• In a large mixing bowl, combine the egg yolks, lime zest, crème fraîche, and sweetened condensed milk.

• Use an electric mixer and beat the mixture on high speed for about 2 minutes until smooth and creamy.

• Slowly pour in the key lime juice and mix again until fully incorporated. The filling will thicken slightly, this is perfect.

• Pour the lime cream into the cooled crust and smooth the top with a spatula.

• Return the pie to the oven and bake at 180°C (350°F) for 15 minutes. The center should be just set with a slight jiggle.

• Let the pie cool at room temperature, then refrigerate for at least 3 hours (or overnight) until fully set and chilled.

Make the Meringue Topping

• In a clean, dry mixing bowl, add the egg whites and a pinch of salt. Whip using an electric mixer until soft peaks form.

• Slowly sprinkle in the sugar, a spoonful at a time, while continuing to whip. Beat until stiff, glossy peaks form.

• Spoon the meringue into a piping bag fitted with a star or round tip. Pipe decorative swirls or peaks over the top of the chilled pie.

• Lightly toast the meringue using a kitchen torch until golden brown. Be careful not to burn it, just a light caramel color is perfect.

• Sprinkle over some fresh key lime zest for a vibrant touch and serve immediately or chill until ready to enjoy.