20²µ/¾´Ç³ú cocoa powder
80²µ/2¾´Ç³ú hazelnuts, peeled (or hazelnut butter, see tip)
75²µ/2½´Ç³ú icing sugar
pinch sea salt
1 tsp vanilla extract
100²µ/3½´Ç³ú dark chocolate, 60–65% cocoa solids, chopped into small pieces
crusty white bread, to serve
150ml/5fl oz double cream or vegan cream alternative