Put the biscuits into a food processor and process until fine crumbs form.
Add the sugar and grated coconut and mix.
Pour in the melted butter and stir until everything is evenly moistened.
Press the mixture into the base of a springform pan to form an even layer.
Bake for about 8 minutes at around 160–170 °C.
Make the filling:
In a mixing bowl, put the cream cheese, eggs, grated coconut, coconut milk, pineapple pulp, sugar, flour, vanilla extract, and salt.
Mix with a blender until smooth and well combined.
Set up the bain-marie:
Line the detachable-base pan with at least three layers of aluminum foil.
Pour in the filling. Place the pan into a larger baking pan, then pour hot water into the larger pan until it comes halfway up the sides of the cheesecake pan.
Bake at 160–170 °C for about 1.5 hours, topping up the water if needed.
Chill overnight:
After baking, remove from the oven and cool.
Let the cheesecake rest in the fridge overnight.
Prepare the topping:
Whip the cream, pineapple juice, sugar, and vanilla extract until light and fluffy.
Spread gently over the chilled cheesecake. Chill in the fridge for 30 minutes before serving.