Step by step recipe:
- 2 min.Weight 150 g walnut kernels.
- 2 min.Put them in the food processor with 150 g icing sugar.
- 2 min.Switch on food processor, and as soon as walnuts are reduced to a powder, add egg white...
- 3 min....a spoonful at a time, until paste starts to gather together.
Finish with your hand, gathering all the paste into a ball.
- 5 min.Shape the ball into a thick disc, wrap in plastic film and keep in the fridge.