Roast the nuts in a preheated oven (electric cooker: 175 °C/ circulating air: 150 °C/ gas: see manufacturer) for approx. 10 minutes, remove, allow to cool briefly and chop roughly
Beat the egg whites until stiff, gradually adding 250 g of sugar in small quantities. Fold in vinegar, vanilla and cold nuts, up to 2 tablespoons
Using a spoon, spread approx. 8 circles of dough (approx. 5 cm Ø each) from the beaten egg white on a baking tray lined with baking paper. Bake in a preheated oven (electric cooker: 125 °C/ circulating air: 100 °C/ gas: see manufacturer) for approx. 1 hour
Let the meringue cool completely. Whip the cream until stiff, while pouring in 2 tablespoons of sugar. Spread the cream over half of the meringue. Drizzle with chocolate sauce. Place the remaining meringue on top. Sprinkle the rest with nuts, dust with cocoa and icing sugar
Waiting time approx. 1 hour