Preheat oven to 160°C.
Line a jelly roll pan with parchment paper and grease with cooking spray.
In a medium bowl, mix together eggs and sugar for about 20 minutes.
Sift in flour and maize starch.
Pour batter into prepared pan and spread into an even layer. Bake for about 30 minutes.
When the cake is done, dust a clean kitchen towel with powdered sugar and tip warm cake onto the towel. Peel off parchment paper. Starting at the short end, use the towel to roll the cake into a log. Let cool completely.