Beat the egg whites first and add sugar in 3 stages and beat for 10 minutes until you reach a stiff peak.
Fold in with a spatula the lemon juice and vanilla flavor and also fold the sifted corn starch.
Pipe the meringue on a baking sheet as per picture and bake for 1 hour min. at 110°C and then turn off oven and leave the pavlova inside. After that keep pavlova in a dry place and airtight.
Mix the vanilla crème filling smooth add the fruit puree of your choice and then fold the fres whipped cream under and pipe it on the pavlova and garnish with fresh berries as per picture.