Grind the black sesame seeds finely in a blender.
Soften the butter at room temperature.
Add sugar and salt to the butter and mix well.
Add the ground black sesame, cake flour, and almond flour. Mix until it forms a dough.
Wrap the dough in plastic wrap and chill in the refrigerator for 30 minutes.
Take out the dough, roll it out to 1cm thickness, and cut into desired shapes.
Bake in a preheated oven at 180℃ for 15-18 minutes.
Let them cool completely before serving.