Ingredients
For the crust
200g crushed digestive biscuits
50g sugar
115g buter, melted
For the filling
6 tbsp fresh key lime juice
35g gelatine powder
600ml double cream
285g white chocolate, chopped
680g cream cheese, softened
200g sugar
1 1/2 tbsp lime zest
45g white chocolate, grated or shaved into curls, for garnish
Candied lime peel, for garnish, recipe follows
For the candied lime peels
4 limes, peels removed and sliced into strips
400g sugar, plus more for rolling
480ml water
Preparation
Step 1
For the crust: Mix together the cracker crumbs, sugar, and butter. Press the mixture into the bottom and 1-inch up the sides of a 10-inch springform pan. Set aside.
Step 2
For the filling: In a medium saucepan over medium heat, add the lime juice. Whisk in the gelatin and 120ml of the heavy cream and bring to a simmer. Remove the pan from the heat. Add 285g of white chocolate and stir until smooth. Allow to cool.
Step 3
Using an electric mixer, blend together the cream cheese, sugar and lime zest in a medium bowl, until smooth. Slowly beat in the cooled white chocolate mixture into cream cheese mixture.
Step 4
Using clean, dry beaters, beat the remaining 480ml heavy cream in a small bowl, until it forms soft peaks. Fold it into the white chocolate mixture and pour into the pie crust. Cover and freeze overnight.
Step 5
Remove from freezer and run a sharp knife around inside of springform pan to help loosen the pie. Release springform ring from the bottom of the pan and transfer the pie to a serving plate. Grate or curl the white chocolate over the top and garnish with candied lime peel. Cut into wedges with a knife that has been dipped into hot water and serve.
Step 6
For the candied lime peels: Bring a medium-sized saucepan of water to a boil over medium heat. Add the peels in and blanch them for a few minutes. Set aside.
Step 7
Put the peels in another medium saucepan and cover with equal parts of sugar and water. Simmer, covered, over low heat for 1 hour. Remove the peels and drain until almost dry. Roll into sugar and set aside.
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