• 

  butter for greasing
• 

  raw sugar

  250 g
• 

  hazelnuts plus extra for decorating

  250 g
• 

  salt

  1 pinch
• 

  water

  40 g
• 

  egg yolks

  8
• 

  cornflour

  60 g
• 

  plain flour

  40 g
• 

  baking powder

  1 tbsp

Filling

• 

  egg

  1
• 

  caster sugar

  100 g
• 

  instant granulated coffee

  10 g
• 

  pouring (whipping) cream chilled (see Tips)

  500 g
• 

  desiccated coconut for decorating