Almond pastries

The quantities given are for 30-35 pastries. Mix the almonds and sugar, and blend until you get a kind of coarse flour. Fold in the egg whites (beaten until stiff) and then the sifted flour. Grease and lightly flour the baking tray. Put a little of the dough into a pastry bag and, by squeezing the bag, make lots of little balls, well spaced out from each other. Bake in preheated oven at 180°C for 15-20 minutes. Remove from the oven and let them cool.