Gradually add the sugar, ¼ cup at a time beating until thick, white and glossy.
Fold in the vanilla and chopped hazelnuts.
Make 4 round discs on two lined trays.
Bake for 1 hour at 160°C then turn oven off and allow to cool for a further 2 hours.
Whip the Tatua Culinary & Whipping Cream until soft peaks.
Add the coffee and icing sugar and beat until medium peaks are spoon-able, reserve one cup and set aside.
Place one meringue disc on a serving plate and spoon over some coffee cream, repeat with the remaining layers.
Beat the last cup of Tatua Culinary & Whipping Cream until stiff and transfer to a piping bag and decorate the top layer with peaks and hazelnut toffee.
Toffee - Simmer the sugar, water and nuts in a shallow pan until caramelised, pour out onto a lined baking tray and allow to cool, then break into shards.