Set the oven at 200F. Beat the egg whites with the cream of tartar until stiff peaks form. Add the sugar and vanilla essence and beat for another 3 minutes.

On baking trays with wax paper, spoon the meringue mix in golf ball-size blobs spread out evenly on the tray (you can also pipe the meringue mix into little meringues).

Place in the oven for 5 hours.