Place the double cream, vanilla and sugar in a large bowl and whip until it is light and thick. Don't over whip the cream to stiff peaks.
Fold in the sliced strawberries and broken meringue nests.
Dollop the eton mess into twist top Kilner jars to serve.
To create your white chocolate shavings, take the blade of a large (non-serrated) knife and put it against the flat, wide surface of your chocolate bar. A large bar of chocolate will work better than a small one. Using a little pressure, carefully scrape the chocolate towards you to form chocolate shavings. Decorate the tops of your eton mess jars with the white chocolate and more strawberries.