Ingredients (about 15 cookies)
| Green Barley | 1 sachet (3g) | 
| Butter | 60g | 
| Egg yolk | 1/2 | 
| Sugar | 30g | 
| Wheat-flour | 110g | 
How to Make
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.