Preparation

• 1
  Preheat the oven to 155 degrees C or 302 F
• 2
  Mix corn flour with the caster sugar in a bowl
• 3
  Add the teaspoons of vinegar, vanilla and the seperated egg whites
• 4
  Mix until just combined and then add the boiling water
• 5
  Now whisk the mixture until it is very thick... you're better to use an electric whisk as it does take time!
• 6
  You will know the mixture is ready when it forms stiff peaks- if you're brave tip it upside down to see if it's stiff enough!
• 7
  Cover a baking tray with baking paper and scoop the mixture into the centre and form a circle shape with it- this should be about 3 inches thick
• 8
  Cook for 1 and a half hours- it will be slightly chewy inside still
• 9
  Leave to cool on a baking rack- be careful when moving it- it's ok if it cracks a bit it's not supposed to look perfect!
• 10
  You can top with whipped cream and whatever kind of fruit you fancy- strawberries, kiwi fruit, bananas, peaches, canned fruit cocktail... let you imagination run away with you!