Basic Sponge Cake Recipe

Step 1: You will need
8 eggs, separated to whites and yolks 190 g sugar 95 g flour 55 g corn starch 45 g butter, melted 1 tsp vanilla extract 1 mixer with whisk attachment 1 rubber spatula 1 spring-formed pan, 26cm diameter, lined with parchment 1 bowl 1 sieve 1 wooden skewer