Beat the egg whites until stiff, while letting the sugar trickle in. Beat the beaten egg whites until they are shiny and the sugar has dissolved. Stir in vinegar, sieve the starch on top and fold in. Pour the mixture into a piping bag with a medium perforated spout.
Cover the biscuits with 1 cherry each. Spray meringue onto the biscuits around the cherries and onto the cherries until they are completely covered. Dry the pavlovas in a preheated oven (electric cooker: 100 °C/ circulating air: 75 °C/ gas: see manufacturer) for approx. 1 1/2 hours.