Dessert with Greek coffee and mastiha liqueur. First, you separate the egg whites carefully and whisk them to make a meringue. In another bowl, beat the egg yolks with the sugar well until the mixture is smooth and the ingredients have blended well together. Add the mascarpone cheese to the egg yolk mixture and then the meringue. Stir until the mixture becomes nice and smooth. Soak the boudoir biscuits in a bowl with some mastiha liqueur. Arrange the biscuits in a layer on a large shallow platter and spread half of the mascarpone mixture on them. Repeat the process with the biscuits and the mascarpone mixture. Finally, sprinkle with Greek coffee and your delicious dessert is ready to be served!