Sift together the flour, salt, baking soda and, cinnamon. Set aside
Combine butter and sugar until the mixture lightens in color and is aerated, for about 2 minutes.
Add the ground almonds, vanilla, rum, egg yolks.
In a low-speed mixer, slowly add the flour.
Put the dough into a floured surface and knead lightly.
Make the dough into two equal portions and form each into a disc. Refrigerate until chilled and firm.
Preheat the oven to 350°F. Line two 1/2 sheet pans with parchment paper or a silicone baking mat.
Break the dough into chunks and knead briefly. Roll the dough and use your preferred shaped cookie cutter.
Set the cookie bottoms onto one of the prepared sheet pans.
Reroll the scraps and continue cutting until the first portion of dough is gone.
Use your preferred shape to cut a hole in the center of each cookie top.