Apple snow

• 1½ lb (700 g) cooking apples
• 1tablespoon water<

Peel, core and thinly slice the apples. Put them into a wetted saucepan and add the water and pared lemon rind. Cover with a tight-fitting lid and cook gently for 15 minutes, or until apples are quite soft.

Press the apples through a nylon sieve to make a smooth, thick Purée and allow to cool. Whisk the egg whites until stiff peaks form. Sprinkle in the castor sugar,