1 lemon, juice only
5 quinces, peeled, quartered and cored
2 tbsp caster sugar
1 cinnamon stick
flour, for dusting
1 star anise
175g/6oz granulated sugar
1 vanilla pod, split and seeds scraped
175g/6oz unsalted butter, room temperature
325g/11½oz ready-rolled all-butter puff pastry
vanilla ice cream, to serve