In a bowl, place the 125g of almonds, the 110g of sugar, the 2 pinches of vanilla powder, the two drops of bitter almond extract, and the two white eggs.
Mix them and pour the 25g of hot melted butter on top, continuing to mix.
Cover the mixture and place it in the refrigerator for one hour.
After an hour, preheat the oven to 150°C (300°F).
Mix the 20g of sifted flour into the dough.
Next, using a small spoon, scoop the dough onto a non-stick baking sheet, keeping space between the scoops.
Flatten the dough portions with the back of a spoon dipped in water.
Then, cook for 15 to 18 minutes.
Once out of the oven, take a rolling pin or another cylindrical object, and create an indent across each biscuit.
Finally, allow them to cool on a wire rack.