200g/7oz golden syrup
15²µ/½´Ç³ú cornflour
75²µ/2½´Ç³ú demerara sugar
300²µ/10½´Ç³ú maple syrup
250g/9oz walnuts, roughly chopped
8 walnuts
5 tbsp walnut oil, to serve
115g/4oz salted butter
300ml/10fl oz crème fraîche
5 free-range eggs
1 x 25cm/10in blind baked pastry case