1. Mix sugar with ammonium bicarbonate, then put half in a mixer and add all the almonds, chop these ingredients for a few minutes and then add the remaining sugar, and continue to grind until a fine powder.
2. Put chopped almonds and sugar in a bowl and then add the egg whites lightly beaten with a fork, mix everything well and then form into balls, coat them in granulated sugar and gradually place them on a baking sheet covered with parchment paper. Bake the amaretti in a preheated oven at 170 °C for 15 minutes.
3. Let cool and then serve the amaretti.
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