For the citrus topping (make the night before)
Peel only the yellow part of each lemon to make fine but wide shavings.
Put the peels in a saucepan of sugared water and boil gently for 10 minutes.
Remove segments of the lemon, trimming away any membrane, and immerse them in a mixture of water and honey. Let marinate overnight.
Use a mandoline to thinly slice the Buddha’s hand and put the slices in a mixing bowl. Heat the syrup until very hot and pour over the slices.
Let the citruses heat gently until they are lightly candied, then place in the fridge.
For the cheesecake filling
Melt the white chocolate.
Whip the cream in a mixer at low speed, then place it in the fridge.
Combine the egg and the Philadelphia soft cheese.
Make a syrup with the water, sugar, lime zest and gelatine, then pass it through a mesh strainer.
Add the syrup to the cheese mixture, then add the melted white chocolate.
Fold the whipped cream into the above mixture.
Pour into a ring mould and let the batter solidify in the freezer for an hour.
For the granola biscuit
Combine all the ingredients. Spread the mixture inside a greased ring mould on a baking sheet.
Bake at 165°C (325°F) for 15 minutes.
Remove the ring while it is still warm, and place the biscuit in the fridge or freezer.
To serve
Place the cheesecake disk on the biscuit.
Decorate the top with the marinated lemon segments and then the candied citrus peels.
Note: Assemble the dessert in advance and let it sit at room temperature to ensure that all the components thaw before serving.