1: Preheat the oven to 150°C (300°F). Put 60 g egg white and 100 g icing sugar into a food-processor bowl.
2: Beat to mix thoroughly, then place the bowl over a pan of water kept at a bare simmer. Beat the mixture until the temperature reaches 50°C (122°F), using a thermometer to check this.
3: Return the bowl to the food processor and beat on maximum speed for around 5 minutes.
4: You will notice that the mixture is not as light as for a classic meringue, but much creamier.