500ml/18fl oz pear juice
2 Williams pears, peeled and cored
50²µ/1¾´Ç³ú membrillo
1 bay leaf
10 black peppercorns
100²µ/3½´Ç³ú caster sugar
1 cinnamon stick
10 cloves
1 vanilla pod, seeds scraped
100²µ/3½´Ç³ú walnuts, roughly chopped
1 free-range egg, beaten
500g/1lb 2oz puff pastry