Lay the pineapple chunks and the juice on a high sided lined tray that will fit in your freezer.

Place in the freezer for a minimum of 5 hours or ideally overnight.

Remove the pineapple from the freezer and let it thaw for about 5 minutes. Break up the frozen pieces if you can and then add to a blender with the zest and juice of both limes. 

Blitz until smooth and creamy, stopping and stirring occasionally then spoon into a container.

Place back in the freezer for 1-2 hours then remove from the freezer 15 minutes before serving. 

Serve with extra lime zest and coconut flakes.