Preheat oven to 350 degrees F.
In a large mixing bowl beat the egg whites are foamy and hold soft peaks.
Add sugar and cornstarch gradually.
Mix in vanilla extract and vinegar until stiff peaks form and mixture is no longer gritty. Test it by rubbing mixture between 2 fingers.
Use a spatula to spread mixture into a 9 inch circle on a large round baking tray, lined with parchment paper. I highly recommend drawing out a 9 inch circle on the parchment beforehand to make this step easy.
Place tray in oven and immediately reduce the temperature to 240 degrees F.
Bake for 90 minutes. Do not open the oven!
When the baking time is over, turn off the oven but don't open it.
Let it cool in the oven and dry out further for 2-3 hours or overnight.
Spread whipped cream on top.
Add all the fruit toppings (strawberries, blueberries, kiwis, pomegranate seeds).
Drizzle warm strawberry jam on top.
Serve immediately and enjoy!