500ml/18fl oz pear juice
2 Williams pears, peeled and cored
50驳/1戮辞锄 membrillo
1 bay leaf
10 black peppercorns
100驳/3陆辞锄 caster sugar
1 cinnamon stick
10 cloves
1 vanilla pod, seeds scraped
100驳/3陆辞锄 walnuts, roughly chopped
1 free-range egg, beaten
500g/1lb 2oz puff pastry