Burberry Swiss Roll Cake - Pankobunny

Ingredients

• 4 eggs
• 1/3 cup sugar
• ¼ cup water
• 8 tsp vegetable oil
• vanilla extract
• 2/3 cup + 3 1/2 tsp cake flour
• 1 tsp corn starch
• a pinch of cream of tartar
• black food coloring
• red food coloring
• brown food coloring
• 3 tsp sugar
• 4 tsp hot water
• 2/3 cup whipping cream
• 4 tsp sugar
• 1 banana