Preheat oven to 180°

In a bowl add the water, cocoa powder and chocolate. Cover with plastic wrap and microwave it for 1 and a half minutes.

Remove the chocolate from microwave and whisk until combined.

In a bowl add the egg whites, salt and icing sugar. Then beat for 3-4 minutes.

To the chocolate mixture add the corn starch, vanilla and egg yolk. Whisk until everything is combined.

Slowly add the meringue to the chocolate mixture and gently fold with a spatula.

Bake for 10 or 15 minutes (depends on the pan size).

Make whipped cream to serve