1. Put the butter in a container to soften at room temperature.
2. Add sugar and salt to beat for smoothness.
3. Add an egg yolk and beat evenly.
4. Add flour.
5. Mix well.
6. Take half of the batter and put it into a piping bag as shown in the figure.
7. Add matcha powder to the remaining half of the batter, mix well and put it into a piping bag as shown in the picture.
8. Squeeze on the baking sheet.
9. Squeeze them all, preheat the oven in advance and bake at 150° for about 30 minutes.
10. Finished picture.
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