
Soften butter by leaving it at room temperature, add sugar and mix with a whisk.

Add egg yolk and Green Barley and mix. Then, add wheat flour by using a sifter.

Mix with a rubber spatula, and use hands to set the dough together.

Wrap the dough and cool it in a refrigerator for 30 minutes to an hour.

Use a rolling pin to stretch the dough to 5mm thickness, cut out shapes using a mold, and arrange them on a griddle covered with an oven sheet.

Bake 15 minutes in an oven preheated to 180 degrees.