4 medium egg whites
225g/8 oz. caster sugar
1 teaspoon corn flour
Beat egg whites to soft peak, beat in caster sugar, a quarter at a time. Beating for a full minute after adding each quarter. Fold in corn flour. Place in spoonfuls, or pipe onto lined baking trays, allowing room for spreading.
Preheat oven to (gas 2) 300F/150C and when trays go in turn down immediately to (gas1) 250F/140C. Leave for 1 hour, then switch oven off, and leave to cool in oven, (about 1 hour 30 minutes) will keep for a few days in a tin.