‘Proper’ chips with Cornish cheddar and black truffle
By Paul Ainsworth From Saturday Kitchen Ingredients For the truffle Madeira mayonnaise 500ml/18fl oz beef stock 200ml/7fl oz Madeira 100ml/3½fl oz port 2 large free-range egg yolks 1 tbsp Dijon mustard 1 tbsp sherry vinegar 400ml/14fl oz rapeseed oil 50g/1¾oz truffle paste salt and freshly …