How to make
Soak the almonds in boiling water for 30 min. Then they'll be easy to peel. Cut them into pieces. Bake the peeled and cut almonds in a 300°F (150 °C) oven to a light golden color.
Mix together the soft butter, the egg, sugar, 3 vanillas and beat with a mixer to a smooth mixture.
Add the alcohol, then the ammonium bicarbonate which you've extinguished in a little lemon juice. Next, add the almonds and sifted flour with the baking powder. Knead a crumbly dough.
Shape balls, arrange them in a baking tray laid out with baking paper and bake in a preheated 350°F (175 °C) about 10 min. or until the balls gain a light caramel crisp.
While still warm, roll the balls in powdered sugar. Leave them to cool. Once fully cooled, sprinkle them generously with a mixture of powdered sugar and the remaining 2 vanillas.
It's best to let them sit for a few days before consumption.