질문하기
Leave the butter at room temperature until softened.
In a bowl, cream together the butter and sugar.
Add egg yolk, vanilla extract, and mocha (liquid coffee or instant coffee powder) and mix well.
Add cake flour, baking powder, and salt, then mix to form a dough.
Spread the dough evenly in a pan.
Bake in a 180°C oven for 20-25 minutes.
Cool, then cut into bars.
