Grind the almonds finely, mix with 150 grams of sugar. Separate the eggs from the eggs and beat them in a strong foam, then gently add the remaining sugar. Add the almond mass in small parts to the proteins, mix gently until smooth. Grease a baking sheet with butter and sprinkle flour. Put the almond dough with a teaspoon or a pastry syringe on a baking sheet to make small round cookies, let stand for 2 hours. Put the baking sheet in the oven, heated to 150 ° C for 1 hour, the cookie should be dried, not bake. Sprinkle the finished cookies with powdered sugar.